Handan City Guantong Fastener Co., Ltd. is located west of the Beijing-Guangzhou Railway line and 18 kilometers north of Handan City, with a fixed asset of 30 million yuan, is a leading manufacturer and exporter of fasteners.Our main products include:GB nuts,non-standard nuts,BS nuts,DIN nuts,ANSI hex nuts,JIS nuts,high intensity nuts series,Cold-heading M6-M22 smooth nuts of national standard, M20-M100 crude nuts, and various kinds of irregularly shaped nuts,our annual yield of nuts is over ...