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By certification 
Jiangsu Zhenya Special Screw Co.,Ltd is one of the leading China flat washers manufacturers and suppliers, as a professional company, our productive factory is able to produce CE certification flat washers at both high quality and low price. Welcome to buy discount and cheap, or wholesale products from us.
flat Washers provide a smooth bearing surface and are used under the head of a bolt and / or a nut. Flat washers are covered under DIN125 These washers are unhardened and intended for general use.
