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HAIYAN JINGGONG STANDARD PARTS FACTORY is a professional manufacturer of various standard and non-standard bolts. Welcome to Jinggong for standard hex bolts, hex socket bolts, hex flange bolts, carriage bolts to DIN/BS/IFI/GB, and various non-standard bolts. Class ranges from 4.8 to 12.9 in DIN ( from 2 to 8 in IFI ). Diameter ranges from 5mm to 20mm in DIN (from 1/4” to 7/8” in IFI). We had passed GB/T19001-2016/ISO9001:2015 quality certification system.Jinggong standard parts regard the quality of products as the life of the enterprise, pay attention to the contract and keep the promise. We have been serving buyers in the US, Europe and other markets. Welcome the friends and customers both from home and aboard to visit Jinggong and talk business.