Bolt, Nut, Customized Fastener manufacturer / supplier in China, offering ASTM A194 Gr 2h Gr 4 Gr. 7 Gr 2hm Heavy Hex Nuts, ASTM SS304 SS316 A2-70 A4-80 Hex Bolt, Fasteners ASTM A193 B7 B7m A320 L7 L7m Threaded Rods and so on.
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