BEIJING GUODIAN DIAN KE YUAN DETECTION TECHNOLOGY Co., Ltd. is located at the core zone of Beijing Zhong Guan Cun. As a high-tech subsidiary under Guodian science and technology research institute, it is specialized in developing, producing industrial endoscope detection machine and nondestructive detecting engineering. Its main products include 360??????rotating endoscope, electric adjusting focus and light endoscope, electric direction endoscope, optical fiber endoscope; low-frequency magnetic ...