On December 5th, 2014, professor orthodontics academic peak BBS and Wu Guangzeng new conference in Shanghai Wan Zhong Hospital concluded successfully .Experts and professors who took part in the summit were yaojun Dong, Guangzeng Wu , Yuehua Liu and so on.Such as Guihua Zhan (General Manager)who comes from Hangzhou Headway Medical Equipment co., LTD.,  attended the summit and gave a speech.