◆My name is Ms Teddy,and graduated from international trade major of Southwest Jiaotong University in 2004, and began to working in fastener industrial. ◆I am familiar with American standard, German standard, ISO and other standards,and very familiar with the whole production process of fasteners. I often accompany customers to review the whole production process and introduce the control process of each process in detail. I once accompanied FMC. FASTENAL, LONESTAR, WURTH, RYHER,FABORY, GRIANGER, AUGE, CAMERON (SCHLUMBERGER) ext companies compliance audit, and finally establish a good long-term relations of cooperation. ◆DONGXIN since from 1992 and mainly focuses on the production of fasteners in OIL GAS ,Petroleum and Petrochemical, Wind power, Construction and other industries. The quality and service are highly recognized by customers all over the world. The company has an independent testing center to ensure that each batch of products are of high quality. The company has established an automatic warehouse,our plant to achieve ERP digital management, workshop has a number of automatic production equipment. ◆Our brand: DX fasteners are widely used in petroleum and petrochemical, wind power, construction and other industries. ◆Our main products including:Nuts:◆ ASTM A194 Heavy Hex Nuts: 2H, 2HM,7,7L 7M, 4，4L,6，8/8A,8C/8CA,8M/8MA,8T/T8TA.◆ ASTM A563/A563M Heavy Hex Nuts: DH, A, C, 8S, 10S, 10, 12.◆ AS 1252 / 1112 STRUCTURE NUTS: Class 8, 10.◆ JIS 1186/1181 HEAVY HEX NUTS: Class F8T, 10T, 8, 10.◆ ISO 4032 HEX NUTS: Class 8, 10, 12.◆ DIN 934 / 6915 HEX NUTS: 8, 10, 12.◆ EN 14399 HEAVY HEX NUTS: Class 10.◆ UNI 5587 HEX NUTS: Class 8, 10.◆ GB 1229 STRUCTURE NUTS: Class 8, 10.◆ GB 6170 HEX NUTS: Class 8,10Studs, Thread Bar, Tapping/Double End Studs:◆ ASTM A193/A320 Alloy Steels: B7, B7M, B16, L7, L7M, L43◆ ASTM A193/A320 Stainless Steels: B8, B8M, B8T (Class 1 and Class 2), B6.◆ Precipitation Hardened Stainless Steels: ASTM A453 Grade 660.◆ DIN 975/976 thread bar:Class 8.8,10.9,12.9Bolts:◆ All kinds of Hex Head Bolts, Hex Socket Head Cap Screw with Grade: 8.8, 10.9, 12.9.Washers:◆ All kinds of Spring, Flat, Heavy washers with any grade.