Danyang Pengfei Technology Development Co., Ltd. on September 16, 2003 through the Certification and Accreditation Committee approved formally obtained the ISO9001: 2000 quality certification. Marks Danyang Pengfei Technology Development Co., Ltd. From the ISO9001: 1994 version of the ISO9001: 2000 version step further, increasing the quality of management; takeoff Danyang Pengfei Technology Development Co., Ltd. will provide our customers with better service.Diamond Plungers {dot} process is the company's new product development, design technology department at the international and domestic leading level. And included in the State Intellectual Property Office patent is: 201120324462.0. The company uses German imports of graphite development, design, manufacture graphite positioning column series, diameter 6mm and 9mm, shape of round, diamond. Match with a variety of graphite boat so ......