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Haiyan Rongji Standard Fasteners Co., Ltd (Its previous name is Haiyan Rong Sheng Standard Parts Plant) was founded in 1993, which located at the northern bridgehead of the Hangzhou Bay Cross-sea Bridge. And it occupies area of more than 18000 square meters, 6000 square meters' standard workshop. Our main products has ANSI wood screw, DIN571 wood screw, carriage bolt, hexagonal bolt, hexagonal bolt with flange gasket, clasp nail, lifting eyebolts, double end bolt, U and V Type bolt, furniture bolt and cement nail, Surface treatment has zinc plate, hot dipped galvanized zinc, polishing, harden, black pleated and Dacromet, etc.
The annual producing ability of Rongji is 8000 tons, a...
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