Yonggu Fastener co.,ltd of Wenzhou Eco.&Tec. Evelopment Zone was founded in 1985 and located in Wenzhou ,where is famous as industry and commerce in China. The company specialize in designing, producing and selling fasteners.The board chairman,Mr. Yan Yongguang also charges Wenzhou Fastener Association. Bolts, nuts, machine screws and washers are our main products. We not only implement Chinese standard but also introduce into all kinds of international standard,we can manufacture the products according to DIN,ANSI,BS,ISO strictly and also according to customers drawings.