Nanjing Proteny Co., Ltd., registered in the mainland China and located in Nanjing, is a subsidiary of Prolong Group dealing in the import and export of medical instruments. Prolong Group, which headquarter is in Beijing, is one of the largest manufacturers of various kinds of medical instruments. It has factories, research and development department, and sales network reaching the whole country. The main products of the company include Clinic Lab Equipment, Surgical Instrument, X-ray Video