Guangzhou Pharmaceutical Company Limited, the controlling shareholder of which is Guangzhou Pharmaceutical Holdings Limited, is a public company engaged in the manufacturing and sales of Chinese medicine, which is listed both at the Stock Exchange of Hong Kong Limited (H Shares) and the Shanghai Stock Exchange (A Shares). Guangzhou Baiyunshan Pharmaceutical Company Limited issued its A Shares at the Shenzhen Stock Exchange in November 1993 and was one of the first batch of listed companies in Guangzhou, the core business of which is manufacturing and sales of Chinese and western medicine and raw medicine. In 2001, Guangzhou Pharmaceutical Holdings Limited became the substantial shareholder of Guangzhou Baiyunshan Pharmaceutical Company Limited.