HeBei Yixin Fastener Co., Ltd. Donated in High strength fastening products, Including Bolt, Nut, Screw, Fastening, etc. We are experienced in large project and reputed on the field of fasteners. We once participate in No.2 line subway of Qingdao, No.7 line subway of Wuhan, No.6 line subway of Beijing, No.1 line subway of Zhengzhou, No.2 line subway of Shijiazhuang, etc.