BMP Sunstone Corporation, formerly Beijing Med-Pharm Corporation, is a specialty pharmaceutical company with over-the-counter (OTC) manufacturing, marketing and distribution based in China. Through its subsidiary, Sunstone (Tangshan) Pharmaceutical Co., Ltd. (Sunstone) it manufactures, markets and distributes OTC products in China. Through Beijing Medpharm Co. Ltd. (BMP China), Beijing Wanwei Pharmaceutical Co., Ltd., (Wanwei), and Shanghai Rongheng Pharmaceutical Company (Rongheng), it offers to foreign and domestic pharmaceutical manufacturers in China, services focused primarily on marketing and promotional services and distribution services. It operates in three segments: branded OTC segment, which includes the operations of Sunstone, Pharmaceutical Distribution segment, which includes the operations of Wanwei and Rongheng and Licensed Products segment, which includes the operations of BMP China. On July 4, 2008, it completed the acquisition of 63.3% interest in Rongheng.