Shanghai Zinsn Industrial Co.,Ltd.is a professional fasteners manufacturer, distributor and exporter which consists of foreign trade department, the domestic trade department, the manufacture department and five external agencies, has two separate factories,Our company is always directed by the market on the basic of production,Our main products include all kinds of and all sizes of screws used in construction machinery, general machinery, municipal construction and other fields, Deutch Industrial Norm DIN, American Standard ANSI, Britain Standard BS and Japanese Industrial Standard JIS, etc. also exported to many countries in North America, South America, Europe, South Africa and Middle-East Asia.