. Cai Hetang is not a company, but they all belong to an ancient China enterprise. GPHL Guangzhou Caizhilin Pharmaceutical Co., Ltd. is a wholly-owned subsidiary of Guangzhou Baiyunshan Pharmaceutical Group Co., Ltd. Guangzhou Baiyunshan Jingxiutang Pharmaceutical Co., Ltd. is one of the main Chinese patent medicine manufacturers under Guangzhou Pharmaceutical Group Co., Ltd. and Guangzhou Baiyunshan Pharmaceutical Group Co., Ltd.