Bio-Bridge Science, Inc.'s subsidiary, Bio-Bridge JRS Biosciences (Beijing) Co., Ltd. (Bio-Bridge JRS Biosciences) is located in Beijing, China. Its primary operations are to manufacture and distribute cell culture media and related products.

Cell culture medium is a liquid or solidified nutrient material suitable for the cultivation of microorganisms. Cell culture medium is used widely in vaccine production as well as scientific research.

Bio-Bridge JRS Biosciences is a joint-venture with J R Scientific, Inc., a Woodland, California based manufacturer of classical and custom cell culture media and sera products. J R Scientific, Inc. was the first to provide the industry with large-scale powdered media, low protein serum-free hybridoma and insect cell culture media, and bulk liquid media transfer systems. J R Scientific, Inc. currently operates a cGMP manufacturing facility and produces Class I Medical Devices and is registered with the FDA.