we founded in 2004, is wedged between the municipalities of Beijing and Tianjin. Our products include GBã??JIS ã??BSã??DINã??ANSI flange using mild steel material, has steady performance, manufacture various nonstandard products according to customer's requirements. We manufacture standard fastener with more than 20 series thousands of specifications, from normal version to alloy steel, constructional steel, carbonsteel high strength bolt nut. all products are the industry standard in accordance with GB standards and occupation standard, reliable quality and excellent performance.