... detailPhotos for PackingNingbo Zhenhai Hualong Fasteners Co., Ltd. Manufacturer of bolts ,nuts,wcrews,washers and other fasteners.We often make the ... best you can trust. Looking forward to your cooperataionRegarding to Bolts StandardDIN931,DIN933,DIN6914,ASTM A325M,ASTMA325, ASTM A-10,ASTM490M ... Delivery6) We have 10years experience of manufacturing fasteners THREAD ROD STUD BOLT DIN975