WENZHOU JINSHENG FASTENER CO., LTD established in xxxxx locates in Wenzhou city, China .we are a prefessional manufacture for various nuts. nylon insert lock nuts , cap nuts, Flange nuts .Ect. Covering an area more than 10000 m2 , Our company is one of the company which have the authentication of ISO9001:2000 quality management system certificate. We have adopted more than 70 sets imported cold form machines and other kinds of cold form machines.