Shanghai Prime Machinery Co.,Ltd  
Contact Name:Weiwu WangPhone:021-63177707-1586Fax:8621-63178909,8621-63177538
Address:15/F 600 Hengfeng RoadZipcode:200070
Email:Website: http://www.sfiec.com
DIN product:
DIN 1587
Hexagon domed cap nuts