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Huatai Testing and Certification Group Co., LTD. -- Research and development scientist

Release time:2024-08-28

Salary: 25-33k
Experience requirements: Unlimited experience
Educational requirements: Dr
Job Description:
A, responsibility < br / > 1. Standard substance research and development scientists, carry out research on high-accuracy analysis methods in the field of environment and food safety, responsible for the research and development of standard substances, formulate the synthesis route, purification method and setting method of standard substances, and determine the value of standard substances; < br / > 2. Coordinate the quality control and stability research of standard substances, formulate corresponding experimental plans and protocols, supervise the quality of sample preparation, uniformity and stability evaluation, and provide standardized, reliable and authentic experimental records and standard maps; < br / > 3. Responsible for the analysis and filing of test data, standard material review report and defense work; < br / > 4. Follow up the development of international and domestic standard materials. < br / > Second, recruit conditions < br / > 1. Postdoc applicants should generally be under the age of 35 and have obtained a doctoral degree within or outside China for less than 3 years. < br / > 2. Background in organic chemistry/biochemistry/medicinal chemistry/analytical chemistry, preferably in the field of isotopes, toxins or dioxins. < br / > 3. Excellent quality, good health, skilled chemical experiment skills and good scientific research quality. < br / > Third, treatment in stand < br / > (a) the company welfare < br / > 1. The five social insurance and one housing fund, all kinds of generous benefits < br / > 2. The year-end bonuses and double pay, holiday, birthday present gift < br / > 3. Eight hours for five days, according to the national legal holiday vacation < br / > 4. Enjoy annual leave, wedding leave, maternity leave, sick leave, funeral leave and other paid leave benefits < br / > 5. Free for household, trailing spouse and children < br / > 6. Assist to apply for housing (housing, talent, etc.) < br / > 7. The perfect training system < br / > 8. Timely rotational, multi-channel promotion channels, a good career planning < br / > (2), a postdoctoral fellow at stand living subsidies < br / > 1. Each postdoc in the station can apply for annual living allowance (180,000 yuan in Shenzhen + 60,000 yuan in Bao 'an District), and the subsidy period is not more than 2 years. The company provides an additional subsidy of 10W-18W/ year. For post-doctoral students who come or stay abroad, they can apply for 300,000 yuan research funding; < br / > 2. Those who meet the requirements of Shenzhen Reserve level talents (won the National Youth Fund and the project has been completed, China Postdoctoral Fund, or stayed in scientific research for at least 3 years, etc.) can get 1.6 million yuan housing subsidy. < br / > Wechat Share

Huatai Testing and Certification Group Co., LTD. - Laboratory Technology Manager

Release time:2024-08-28

Salary: 15-16k·13 salary
Experience requirements: Unlimited experience
Educational requirements: Dr
Job Description:
Job Description (part-time) :

1. Responsible for enhancing and improving the technical capability of the laboratory;

2. Responsible for cultivating the core personnel of the laboratory and reserving reserve talents;

3. Participate in external technical exchanges on behalf of the laboratory;

4. Led the laboratory team to participate in international standardization, regional standardization, and domestic standardization work and research, and undertook relevant scientific research projects;

5. Research on standards and regulations in related fields, and standardize them according to the company's technical service capabilities.

Job Requirements:

1. Doctor, senior title;

2. Food, chemistry, biology and related majors;

3. Mature, good at communication, healthy, conscientious, with good scientific research accomplishment, good logical thinking ability, analysis and problem solving ability;

4. Fluent in English listening, speaking, reading and writing, and have a certain ability to draft documents;

5. CMA/CNAS reviewer qualification is preferred;

6. Identify with the company's corporate culture, have a strong sense of responsibility, good communication skills, have a big picture and team spirit, have systematic thinking and cross-border thinking;

7. Positive and optimistic working attitude, good teamwork ability;

8. Salary negotiable.

Huatai Testing Certification Group Co., LTD. -- Postdoctoral Researcher (Spectral direction)

Release time:2024-08-28

Salary: 20-30k
Experience requirements: Less than 1 year
Educational requirements: Dr
Job Description:
Job Requirements:
1. Applicants who have obtained a doctoral degree within or outside China for less than 3 years or are about to obtain a doctoral degree should be under the age of 35.
2, analytical chemistry, precision instrument, optics, physics, measurement and control and other instrument science and technology related majors.
3, spectral instruments or related analytical instruments research and development experience is preferred.
4, excellent quality, good health, with good scientific research quality.
Job Description:
1. Research on standards and regulations in related fields, and translate them into lab-related services;
2. Undertake research in related fields;
3. Undertake research and development of spectral analysis instruments, evaluate innovative cutting-edge technologies, conduct principle research, and develop and optimize spectroscopy-related software and algorithms;
4, identify with the company's corporate culture, strong sense of responsibility, have a big picture and team spirit, have systematic thinking and cross-border thinking, good communication skills.

Huatai Testing and Certification Group Co., LTD. - Postdoctoral researcher

Release time:2024-08-28

Salary: 20-30k·14 salary
Experience requirements: 1-3 years
Educational requirements: Dr
Job Description:
Qualifications: < br / > 1. Postdoctoral applicants should generally be under the age of 35, have obtained a doctoral degree within or outside China for less than 3 years, or are about to obtain a doctoral degree; < br / > 2, organic chemistry/biochemistry/medicinal chemistry/analytical chemistry/medicine/computer/materials and other related professional learning background; < br / > 3, excellent quality, good health, with good scientific research quality. < br / > Job responsibilities: < br / > 1. Research on standards and regulations in related fields, and translate them into lab-related services; < br / > 2. Undertake research in related fields.

Huatai Testing and Certification Group Co., LTD. - Special food scientific research and technical director

Release time:2024-08-28

Salary: 12-15k·13 salary
Experience requirements: 1-3 years
Educational requirements: Dr
Job Description:
1. Responsible for developing clinical research objectives, plans, strategies and implementation plans;
2. Controlled the progress of clinical trials, coordinated the relationship between various departments and related matters;
3, contact and follow up academic experts, undertake relevant important matters;
4, publish/review the center staff's papers and other related content;
5. Responsible for the technical guidance and training of the department;
6. Assist superiors to attend domestic and international academic conferences and deliver speeches;
7. Other matters assigned by superiors.
Job Requirements
1, Doctor degree or above, pharmacy, Chinese medicine, nutrition, biological engineering and other related majors;
2, more than 2 years of work experience, with a certain degree of speech ability;
3. Published research papers in well-known international journals in related fields, with good academic ability and development potential;
4, clinical research experience in pharmaceutical companies or CRO companies is preferred, able to lead the team to independently execute clinical trials, with strong project planning and analysis and problem solving skills;
5. Proficient in consulting and translating English literature, good at English listening, speaking, reading and writing.
6. Carry out safety and functional verification, functional human food test projects, clinical trials of special medical use formula food clinical trials

China Testing Certification Group Co., LTD. -- R&D Manager/Director (Genetic Testing)

Release time:2024-08-28

Salary: Salary:
Experience requirements: 5-10 years
Educational requirements: Dr
Job Description:
Job Description:

1, according to the company's overall strategic direction, marketing research results and customer requirements, lead and guide the special inspection R & D/production team to complete the development of clinical testing products, methodologies, technologies and applications, and ensure the project progress and completion in accordance with quality requirements;

2, responsible for assisting other departments of the company to complete the conversion of new products, technical support training and marketing;

3. Undertake and participate in the development process of specific products, solve technical difficulties in the process of product development, guide and assist the smooth implementation of R&D projects;

4, responsible for the application and management of platform related scientific research projects, undertake and guide the R & D team papers, patents and other intellectual property output;

5. Responsible for the optimization and improvement of various management systems and processes within the department, and supervise the implementation; Responsible for the management, control and confidentiality of technical data of the department;

6. Cooperate with quality management department to complete the construction of R & D quality system, and prepare quality documents at all levels according to system requirements;

7. Responsible for the introduction, training and daily management of the team's outstanding talents, constantly enhancing the team's technical development ability and competitiveness, and creating an efficient and agile R&D technical team;

8. Complete other work arranged by superiors.

Job Requirements:

1, Doctor degree, genetics, molecular biology, biochemistry, clinical medicine, medical laboratory and other bio-related majors, with more than 10 years of biomedical product development experience or laboratory research experience, and more than 5 years of team management experience;

2. Proficient in the research and development of molecular detection kits such as tNGS,mNGS,qPCR, RT-qPCR, RT-LAMP, RPA, second-generation sequencing library building reagents, including primer design and system optimization; Familiar with the screening and performance evaluation methods of molecular reagent core raw materials; Solid theoretical foundation and experience in the development of clinical genetic testing products such as high-throughput sequencing and liquid biopsy, as well as experience in the development of large health products or cooperation with pharmaceutical companies is preferred.
3, familiar with molecular detection reagents related industries, including but not limited to IVD, research and development at home and abroad and related products market application and development trends;

4, with strong management ability, logical thinking ability and pressure ability, and self-drive, love R & D work.

5, have a sense of innovation, have a strong sense of teamwork, professionalism and professional ethics, strong sense of responsibility, work actively, rigorous and careful;

6. Proficient in office software operation.

Keshun Waterproof Technology Co., LTD. - Postdoctoral

Release time:2024-08-28

Salary: 25-30k
Experience requirements: Unlimited experience
Educational requirements: Dr
Job Description:
Research direction:

1. Responsible for the synthesis and modification of new materials, including but not limited to polyurethane, acrylic acid, silicone and epoxy resin;

2. The application research of new materials includes not limited to waterproof, anti-corrosion, sealing, heat insulation, sound insulation and noise reduction, fire retardant, electronic chemicals, new energy chemicals, etc.;

3, silicate inorganic materials and application research, especially in new building applications, high-strength concrete, additive applications have cutting-edge research results;

4, with the above new materials and applied research projects or experience is preferred;

Qualifications:

1, with a solid professional foundation and strong professional thinking, able to independently research topics;

2, have strong English literature review and reading and writing skills;

3, strong problem analysis and solution skills, good communication skills.

Shenzhen New Industry Biomedical Engineering Co., LTD. -- In vitro diagnostic reagent development

Release time:2024-08-28

Salary: 22-30k
Experience requirements: Unlimited experience
Educational requirements: Dr
Job Description:
Reagent R&D Engineer (Immune reagents, Basic Research direction) :
Responsible for new product development of chemiluminescent reagents, optimization and upgrade iteration of projects already put into production, and participate in the systematic and difficult problems encountered in the development process.

Job Description:
1. Responsible for the research of relevant project background information, technical literature and other information;
2. Participate in the selection of raw materials, process and reaction system research and other product development test program design.
Job Requirements:
1. Doctor degree or above, major in biology, medicine, laboratory, pharmacy, chemistry or related;
2. With luminous product development experience, good learning and practical ability, communication and expression ability;
3. Have the ability of independent thinking and innovation, and have an open mind;
4. Serious and responsible, practical and hard-working, with a sense of team cooperation.

Clinical Research Manager, Shenzhen New Industry Biomedical Engineering Co., LTD

Release time:2024-08-28

Salary: 24-35k·15 salary
Experience requirements: Unlimited experience
Educational requirements: Dr
Job Description:
1. Participate in clinical trial project evaluation and planning, clinical trial program design and specific implementation plan, and promote the implementation of the project according to the department's goals and needs;

2. Collate and analyze clinical research data, establish databases, write clinical research reports, publish academic papers, and provide academic support for clinical application and market development;

3. Answer the clinical and medical questions of the internal technical staff of the team, and answer the technical questions of external experts on the company's products;

4. Have a good grasp of industry dynamics, participate in new product market research, and be responsible for internal and external clinical research content training;

5. Academic support for large conferences and expert relationship maintenance for daily clinical partners.

Qualifications

1. Doctor degree, clinical, medical, laboratory, biological or related major, tumor methylation research direction is preferred;

2. Good communication skills and data analysis skills;

3. Have a certain strain ability, open-minded, independent thinking;

4. Serious and responsible, hard-working, able to adapt to business trips.

Guanhao Biotechnology Co., LTD. -- Postdoctoral fellow in materials

Release time:2024-08-28

Salary: 15-20k
Experience requirements: Unlimited experience
Educational requirements: Dr
Job Description:
Job Description:
1. Responsible for the technical guidance of the research and development work of the material Department;
2. Entered the post-doctoral workstation to conduct research on topics related to the company's R&D projects.

Job Requirements:
1, Doctor degree, material engineering, tissue engineering, biomedical engineering, biology related major;
2. Have high research experience in regenerative medicine and tissue engineering, publish high-quality articles or have technical patents;
3. Solid professional theory, good scientific research cognition, proficient in consulting and reading various literatures, master relevant research and experiment skills;
4, work actively, have good communication and teamwork skills, to solve the corresponding technical problems.

Guanhao Biotechnology Co., LTD. -- Postdoctoral fellow of biomaterials

Release time:2024-08-28

Salary: 20-30k
Experience requirements: Unlimited experience
Educational requirements: Dr
Job Description:
1, recruitment conditions:
1) Major in polymer materials and engineering, tissue engineering, biomedical engineering, medical device, pharmaceutical engineering, regenerative medicine, biology;
2) Obtained a domestic or foreign doctoral degree in recent years, excellent quality and academic performance, good health, under the age of 35;
3) Relevant working experience in medical industry is preferred;
4) Have strong scientific research ability, professionalism and teamwork ability;
5) Full-time postdoctoral research in the company.

2. Research field
1) Biological materials;
2) Artificial organs;

3, welfare benefits,
1) Provide research and office space for post-doctoral researchers, and be equipped with necessary office facilities and research equipment;
2) Provide free housing, catering and other subsidies for postdoctoral researchers;
3) The salary is determined according to the similar personnel of our company, and the labor insurance, insurance and other benefits are implemented in accordance with the relevant management regulations of the municipal government.
4) The company gives priority to renewal and focus on training;
5) After departure, based on the same treatment before departure, and assist in receiving personal settlement expenses.

Guanhao Biological Technology Co., LTD. - Cell postdoctoral

Release time:2024-08-28

Salary: Salary:
Experience requirements: Unlimited experience
Educational requirements: Dr
Job Description:
Job Description:
1, independently carry out postdoctoral related projects and research work;
2. Responsible for the design, implementation, data statistics and report writing of research projects;
3. Responsible for writing and applying for scientific and technological achievements such as patents;
4. Complete other work assigned by the leader.
Job Requirements:
1. Doctoral degree in biology, medicine or other related majors, under the age of 35;
2, with good communication skills and team spirit, can independently carry out scientific research and product development;
3, with good professional ethics, good conduct, no bad habits.

Guanhao Biotechnology Co., LTD. -- Head of biomaterials research and development

Release time:2024-08-28

Salary: 30-50k
Experience requirements: More than 10 years
Educational requirements: Dr
Job Description:
1. Job responsibilities:
1. As the leader of the R&D team, coordinated the systematic operation of the company's medical device R&D project; Implement and optimize R&D management system; Overall management of the company's R & D and technical support work, responsible for the overall operation of the technical level.
2, responsible for the company's technology development strategy planning and the company's product line planning; Take charge of the feasibility analysis of new products and new technologies, and be responsible for the technical feasibility of new products;
3, responsible for organizing and managing the overall core technology research and research of the company's products; Ensure the continuous improvement of marketed products; Lead and organize the technology development of new products and new projects and the application research of new technologies and new materials of the company to promote the relevant research and development work, and be able to industrialization scientific and technological achievements;
4. Organize and manage the R & D department to complete the R & D task according to the schedule, ensure the R & D direction and progress, and conduct phased decision and review of the project;
5. Establish and train the company's R & D core talent team, designate personnel training plans, supervise and guide the work of R & D department, and build a high-performance R & D technical team;
6. Other assigned work.
Second, job requirements:
1, education requirements: polymer materials, biomedical engineering, tissue engineering, regenerative medicine, medical devices, biology and other majors, doctor's degree or above;
2, experience requirements: more than 8 years of three types of implantable medical device research and development experience, more than 5 years of medical device product CTO management experience; Or more than 10 years of biomaterials research experience in universities and research institutes
3, skilled understanding of medical materials, biological materials (three types of medical devices) R & D process and key technologies, with the vision of industry development trends and the ability to prospectively select development projects;
4, with strong scientific research management ability and project organization management ability;
5, good innovation ability, analytical ability, organization and coordination ability, and communication ability;
6. Independently undertaken projects of domestic and foreign companies or domestic national and provincial projects, preferred to be recruited as discipline leaders in the field of biotechnology;
7, if I have new research and development projects or products in related fields can be preferred.

China Resources Chemical Materials Technology Co., LTD. -- Polymer Materials Polyester Doctor (overseas returnee)

Release time:2024-08-28

Salary: Salary:
Experience requirements: Unlimited experience
Educational requirements: Dr
Job Description:
1. Responsible for the research and development of nylon, PET or nylon fiber related polyester products and the improvement of original products;
2. Responsible for controlling the production process of polyester products, analyzing and solving abnormal technical problems;
3. Responsible for the introduction and tracking of new products and new processes;
4, responsible for the technical improvement of existing production units and the introduction of new technologies;
Qualifications:
1. Doctor degree, polymer and other related majors;
2, polyester related industry experience is preferred, more understanding of nylon, PET or nylon fiber products;
3, chemical equipment such as extrusion, injection molding and other equipment have a certain understanding and contact, have a solid theoretical foundation and practical experience;
4, have strong communication skills and analytical skills, have a certain problem solving ability, innovation ability, test design ability;
5, have a strong sense of responsibility and dedication, can bear hardships and stand hard work

China Resources Chemical Materials Technology Co., LTD. -- Senior Researcher of copolyester Organic Synthesis (PhD)

Release time:2024-08-28

Salary: 16-25k
Experience requirements: Unlimited experience
Educational requirements: Dr
Job Description:
1. Responsible for literature review, design a reasonable route to carry out the synthesis of polyester catalyst or copolyester catalyst, and solve various problems in the research and development process; < br / > 2. Responsible for conducting laboratory experiments such as polymerization or depolymerization, analyzing and solving various problems encountered in the experiments; < br / > 3. Select and optimize the catalyst system according to the analysis and test results; < br / > 4. Responsible for leading and managing researchers to carry out research and development work, and responsible for project management, including project initiation, research and development plan, review and conclusion; According to the project requirements, carry out the scheme design; < br / > 5. Responsible for regularly completing work summary or project summary and reporting; Write related patents and other related work; < br / > 6. Continue to pay attention to and study the industry introduction technology, mining the implementation of new technology in R & D projects; < br / > 7. Assist the superior management platform and other transaction < br / > "Doctor or master degree, major in organic synthesis, industrial catalysis or polymer materials such as related < br / > PhD or master's degree in catalyst design and synthesis; Strong analysis and problem solving skills < br / > Familiar with English literature reading and patent, project written < br / > Familiar with the basic theory of polymer and organic synthesis knowledge and hands-on ability < br / > Be familiar with the industry technology developments, to understand new polyester materials related application market < br / > Experience in pilot or industrialization of polymer materials is preferred "

China Resources Chemical Materials Technology Co., LTD. -- Engineering process technology engineer

Release time:2024-08-28

Salary: 15-25K ·15 salary
Experience requirements: Unlimited experience
Educational requirements: Dr
Job Description:
Job Description :
1. Responsible for chemical process equipment related work, including process calculation, PFD&PID design, material balance preparation, data sheet preparation, condition diagram drawing, etc.;
2. Responsible for proofreading the process technical plan and equipment drawing provided by the process equipment manufacturer;
3. Participate in the formulation of pilot program, participate in pilot study, and form pilot report;
4. Assist in the transformation of complete sets of technology and process, optimize equipment and process technology plan;
5. Assist in the completion of technical confirmation work in the engineering stage, including design review, equipment exchange selection, technical terms confirmation, etc.;
6. Assist R & D team to complete the research and development of new products and new processes, and provide technical support;
7. Complete the temporary work assigned by the leader.
Job Requirements :
1, Master degree or above, major in chemical engineering and technology, process equipment and control, with solid theoretical knowledge, courses involving chemical principles, chemical thermodynamics, physical chemistry, material mechanics, etc., experience in related process equipment projects is preferred;
2, familiar with reaction engineering, separation engineering and other chemical processes;
3, familiar with office and other office software, familiar with CAD and other engineering drawing software, understand ASPEN, PRO II and other process simulation software;
4, understanding of finite element simulation calculation is preferred, such as Fluent,CFX,ansys, etc.;
4, with strong learning ability, communication, cooperation ability, can adapt to travel.

China Resources Chemical Materials Technology Co., LTD. -- Nylon researcher

Release time:2024-08-28

Salary: 10-20k·15 salary
Experience requirements: Unlimited experience
Educational requirements: Dr
Job Description:
Job Description :
1. Research on polymerization mechanism of polyamide;
2. Nylon 66 polymerization differentiation formula research, and product development;
3. Special nylon formula development and process conditions research.
Job Requirements :
1. Doctor degree, fresh graduates can be accepted;
2. Polymer synthesis background, polycondensation related background is preferred.

China Resources Chemical Materials Technology Co., LTD. -- Catalytic Technology R&D Manager (Polyester New materials)

Release time:2024-08-28

Salary: 20-35k·16 salary
Experience requirements: 1-3 years
Educational requirements: Dr
Job Description:
Job Description :
1. Responsible for team building and personnel management;
2. Responsible for reviewing literature, designing reasonable routes for the construction and evaluation of catalyst systems required for polymerization and copolymerization, and solving various problems in the research and development process;
3. Responsible for leading researchers to carry out project application (pre-research, pilot test, pilot test), R&D plan designation, R&D stage review and final report review;
4. Responsible for regularly completing work summary or project summary and reporting; Write related patents and other related work;
5. Continue to pay attention to and study the industry introduction technology, mining the implementation of new technology in R & D projects
6. Assist superior in managing platform and other affairs.
Job Requirements :
1. Doctor degree, more than 2 years working experience, relevant experience in catalytic polymerization, polymer field;
2. PhD or research background in catalyst design and synthesis; Strong analytical and problem solving skills
Familiar with English literature reading and patent and project writing ability;
3. Familiar with the basic theoretical knowledge and practical ability of polymer and organic synthesis;
4. Familiar with the industry technology trends, understand the application market of new polyester materials;
5. Pilot test or industrialization experience of polymer materials is preferred;
6. Experience in copolyester research and development is preferred, or experience in organic synthesis, pilot test or industrialization of catalyst products is preferred.

China Resources Chemical Materials Technology Co., LTD. -- Researcher (Composite Materials)

Release time:2024-08-28

Salary: 12-22k·15 salary
Experience requirements: Unlimited experience
Educational requirements: Dr
Job Description:
Job responsibilities: < br / > 1. Implement the company's new product development plan, and formulate work plans according to the new product development plan; < br / > 2. Participate in the technical feasibility analysis and market pre-research of the company's new products; < br / > 3. Responsible for following up R&D and trial production of product design, pilot test, pilot test, inspection and analysis; < br / > 4. Responsible for the preparation, training and management of product technical documents; < br / > 5. Responsible for the sorting, analysis and summary of product test data; < br / > 6. Responsible for formula design and formula maintenance of ORACLE system in technical department; < br / > 7. Participate in the transformation of project innovation achievements, patent and technology project declaration. < br / > Job requirements: < br / > 1. Major in composite materials, polymer materials, organic chemistry, doctor degree or above; < br / > 2. Familiar with the development of composite material industry, with experience in composite material formulation and structural design; < br / > 3. Have good logical thinking ability and careful thinking.

China Resources Chemical Materials Technology Co., LTD. -- Researcher (Catalysis)

Release time:2024-08-28

Salary: 15-22K ·15 salary
Experience requirements: Unlimited experience
Educational requirements: Dr
Job Description:
Job Description :
1. Responsible for literature review, design a reasonable route to carry out the synthesis of polyester catalyst or copolyester catalyst, and solve various problems in the research and development process;
2. Responsible for conducting laboratory experiments such as polymerization or depolymerization, analyzing and solving various problems encountered in the experiments;
3. Select and optimize the catalyst system according to the analysis and test results;
4. Responsible for leading and managing researchers to carry out research and development work, and responsible for project management, including project initiation, research and development plan, review and conclusion; According to the project requirements, carry out the scheme design;
5. Responsible for regularly completing work summary or project summary and reporting; Write related patents and other related work;
6. Continue to pay attention to and study the industry introduction technology, mining the implementation of new technology in R & D projects;
7. Assist superior in managing platform and other affairs.
Job Requirements :
1. PhD degree, major in organic synthesis, industrial catalysis or polymer materials;
2. Have a background in catalyst design and synthesis during the doctoral or master's degree; Strong ability to analyze and solve problems;
3. Familiar with English literature reading and writing ability of patents and projects;
4. Familiar with the basic theoretical knowledge and practical ability of polymer and organic synthesis;
5. Familiar with the industry technology trends, understand the application market of new polyester materials;
6. Pilot test or industrialization experience of polymer materials is preferred.