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Shanghai Zinsn Industrial Co.,Ltd. is a professional China <A href="https://www.zinsn.com/product/roofing-screws/">roofing screw</A> Manufacturers and Roofing Screws Colours Distributors. Our products are mainly used in engineering machinery, general machinery, municipal construction and other fields, including wholesale Roofing Screws Colours and other sizes of screws, Dutch Industrial Standard (DIN), American Standard (ANSI), British Standard (BS) and Japan Industrial standards (JIS) and other products are also exported to many countries in North America, South America, Europe, South Africa and the Middle East.