Ningbo Yinzhou Gonuo Hardware Co., LTD is based in Ningbo, with over 20 years of specialized fastener production and sales experience. As a professional bolt manufacturer, our core products include forged high-strength bolts, stainless steel bolts and high-precision bolts. We supply premium fasteners to 70+ countries/regions, specializing in non-standard size customization. For the US, Germany and Japan, our products strictly meet ASTM, DIN, JIS standards, winning high global client recognition. Backed by a 4,500㎡ workshop, 60+ machines and 120 staff, our professional design & technical teams deliver tailored solutions. All products are certified by CNAS, MA, ISO 9001, ilac-MRA, IAF for quality assurance.