Bolt, Nut, Customized Fastener manufacturer / supplier in China, offering M6-M48 Foundation Concrete Expansio HDG Zinc Plated High Tensile 8.8 10.9 12.9 Carbon Steel Alloy Steel Extension Anchor Bolt with Nut and Washer, Chinese Factory Price OEM ODM Steel Fastener Hardware High Tensile Grade 8.8 10.9 12.9 Stainless Steel Carbon Steel DIN931 DIN933 Hex Head Bolt and Nut, M6 - M54 Stainless Steel Carbon Steel Hook Bolt Steel U Bolt L Bolt J Bolt with Nuts and so on.