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Bolts May. 25, 2006 4:54:24
The standard can be DIN931, DIN933, DIN6915, DIN7991, DIN7990, etc, the material can be alloy steel and carbon steel
See more »NINGBO ZHENHAI JILIAN FASTENER PIECES CO., LTD, one of the leading manufactures in the line of fasteners in China. We can produce standard hexagonal nuts, square nuts, special nuts and the relevant....