China Medical Science Limited is a Hong Kong-based company. It is principally engaged in bio-livestock feed business, involving in the development and distribution of feed supplements and production and operation of end-user safe food based on the use of feed supplements. The Company operates in four segments: veterinary drugs, feed supplements, safe food and corporate. Veterinary drugs segment comprises the production, sales and distribution of veterinary drugs. The feed supplements segment comprises the manufacture and sale of feed supplements. The safe food segment comprises the trading of livestock and Sakura Pork branded food fed with probiotics-based feed supplements. The corporate segment comprises corporate income and expense items. Its subsidiaries include China Biotechnology Limited, Glazier Limited, Seechain Investments Limited, Chengdu Viking Yuan Heng Pharmaceutical Company Limited, Chengdu Concord Yuen Heng Industrial Company Limited and JBC Bio Products Company Limited.