Autor: screwp unchs

square hexagon plum punch series Haiyan Hengxinyu Mould Co., Ltd. is professional China Non-standard alien series Manufacturers and Non-standard alien series Suppliers, As a pilot company specializing in the development of Non-standard alien series and punching fasteners.The company mainly produces daily standard JIS, American standard ANSI, German standard DIN, national standard GB, ISO common international…