In December 3, 2012, the senior partner of Dacheng Law Firm lawyer Xu Yongqian, lawyer, lawyer Cai Kaiming to the spirit, Daorina lawyers, lawyers and visiting Wufeng American Orrick (Orrick was listed as the seventh in 2008 July America "lawyer" magazine) Jim Stengel (Orrick's board of directors New York office, partners, products liability litigation and large group litigation team responsible person), Laurie Strauch weiss (Orrick global product liability litigation and large group litigation management partner, New York office partner), Christopher Vejnoska (product liability litigation and large group litigation partner, San Francisco office partner), Xiang Wang (Orrick Asia intellectual property management partner, Beijing office managing partner and chief representative) and Wang Xinlv (Orrick Beijing Office Manager) is the legal system of product liability litigation between the two countries conducted in-depth communication, and conducted exchanges on both sides of the future business cooperation.