Professional fastener industry manufacturer / supplier in China, offering GOST R 52644 Hexagon Bolts for High-Strength Structural Bolting with Large Width Across Flats Property Classes 8.8 and 10.9, Coned Disc Springs for Heavy Load Use JIS B 2706 (H) - 2001, ASTM A325 A490 Heavy Hex Structural Bolt and so on.
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