Ningbo Kunyuan Fasteners Co., LTD. is a professional manufacturer of high-strength fasteners headquartered in Ningbo, China. With 4 national invention patents, 12 utility model patents, and participation in multiple national standards, the company delivers products certified to ISO, API, CPR, PED-4.3, AD2000, UKCA-PER, NORSOK M-650, CU-TR EAC and GOST R. Our high-strength fasteners and corrosion-resistant coating components are widely applied in oil fields, refineries, power plants, drilling platforms, offshore oil & gas projects and large-scale EPC engineering worldwide. Supported by domestic offices across China and an international service network spanning the Middle East, Southeast Asia and beyond, we are a long-term supplier to global energy leaders including Sinopec, CNOOC, BP and GE. Backed by 24/7 technical support and 98% on-time delivery, we provide full-cycle engineering partnership from design to installation.