The professional teams at the YiJia research and development (R&D) centers and manufacturing facilities in Los Angeles are staffed with distinguished scientists and experts. They are committed to creating science-based products that have been through extensive clinical studies. The center in Los Angeles is certified for Current Good Manufacturing Practices (CGMP), Hazard Analysis Critical Control Point (HACCP) safety standards, halal (compatibility with Muslim diets) and UL (Underwriters Laboratories) safety standards.

All the facilities have stringent measures and quality assurance systems in a total of 14 production lines to ensure the products’ quality and safety. All products have passed international tests and have met all relevant production standards. They are perfectly balanced and optimized to benefit customers’ overall wellness, providing excellent solutions to let their inner beauty shine through.


Brian Tomlinson

Medial Specialist

Professor in the Department of Medicine and Therapeutics

Professor Tomlinson was previously a Chair Professor of Medicine and Therapeutics in the Department of Medicine and Therapeutics at the Chinese University of Hongkong, where he spent 25 years in academic appointments. He was also Honorary Consultant Physician at the Prince of Wales Hospital in Hong Kong, Clinical Toxicologist in the Poison Treatment Centre there, as we as the Clinical Director of the Clinical Pharmacology Studies Unit, which performs clinical trials at all stages of drug development.


Professor Tomlinson has been involved with over 350 publications in international journals and over 500 abstracts from conference presentations as author or co-author. He has given numerous invited lectures at international and local meetings.

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