宁波海信紧固件有限公司
Ningbo Haixin Hardware produce full sizes (M6-M100/3/8”-4”）high strength nuts by cold forging and hot forging. Our main products are wind power nuts, oil&gas nuts, flange nuts, castle nuts, square nuts and other non-standard nuts. The production technology and quality level are in the leading position of the industry.
Website：www.haixinfstn.com