1.CNBM INTRUDUCTION:China National Building Materials and Equipment Import & Export Corporation is the largest construction materials and equipment supplier in China. With a 20-year experience in import and export, we have established long-term partnerships with customers from USA, Europe and Middle East, covering almost all the building materials and equipment products, such as Insulation Facing/House warp Materials, Window Film, Tower Crane, Concrete Pump Elbows, Hoist, Fiber glass Material or finished products, GRP/FRP Production Line. We have great economic strength and rich overseas business experience. Up now our company has established overseas branches in USA, UAE, Iran Saudi Arabia and Russia to supply the best after-sale service to the our local customers and develop our products/new invest. We mainly produces GB70, DIN912 hexagon socket head cap screws, GB5782, GB5783, DIN931, DIN933 hexagon bolts, GB1228, DIN6914 high-strength hexagon bolts for steel structure, GB27 hexagon hole reaming bolts, GB3632 high-strength torsion shear bolts for steel structure, GB6170, DIN934 nuts, and T-head, stud, square head, countersunk head, set and kinds of nonstandard bolts, with size from M4 to M100(no limit for length), with the ISO glade of 6.8, 8.8, 10.9, 12.9, B7, L7, B7M, produced by material of 35#, 40Cr, 35CrMoA, 42CrMoA, 25Cr2MoVA, 20MinTiB and different stainless steel material. Our main production equipment: heat treatment lines which can heat 1.5t fasteners per hour, cold bolt-makers, of mid-frequency bolt-makers and suited facilities. Main testing machines: tensile machine, hardness tester, impact tester, magnetic particle flaw detector and a full set of physicochemical metallographic facilities. Our products are widely used in machinery, architecture, bridge, vehicle etc. We have huge technical power, advanced production equipment and perfect sets of testing machines. And our factory already passed the ISO9001&＃65306;2002 certificate.