Kunming Guiyan Pharmaceutical Co., Ltd. is the only high-tech enterprise engaged in the production and research and development of platinum-based metal-based anti-tumour drugs in China. The company's plant is located in Kunming National High-Tech Industrial Development Zone, with premises including general production area, clean area and testing centre. The company has advanced production equipment and modern analytical instruments required for the production, research and quality inspection of platinum group metal antitumour APIs. The company's main business is the production and sale of platinum-based antitumour APIs and their key intermediates, with a portion of its products sold to the international market in addition to the domestic market. The company also possesses the technology for the preparation of platinum group metal antitumour drugs such as nedaplatin, sulpoplatin, metaplatin and sertoplatin and their key intermediates, and conducts research on new structured platinum anticancer drugs and other antitumour drugs.