Beijing Sangao Yongxin intellectual property Agency Co., Ltd., the predecessor of which was founded in 1991, Sangao Patent Office. Over the years, the three high Yongxin has been adhering to the "integrity, meticulous, pragmatic, professional" service concept, with "high quality, high efficiency, high reputation" service standards, dedicated to the vast number of domestic and foreign customers to provide high-quality legal services for intellectual property rights.