Qingdao Ruitong Precision Hardware Co., Ltd  located in Qingdao, Shandong, China. We manufacture a range of standard and non-standard fasteners, in ISO, DIN, ANSI, JIS , BS. We also specialize in custom products designed to your exact specifications in both medium and large batch runs.We manufacture with any materials such as carbon and alloy steels (mild and high tensile), stainless steels (all grades), titanium, alloys of nickel, copper and aluminium . Some different heat treatments are available including quench, casehardening, nitriding , annealing and finishes such as zinc, galvanization, Delta protect ,  phosphate, anodizing. Various plated finishes are available, such as zinc plated (bright color or yellow color), hot dip galvanizing, and chemical blackening. Our facilities include multi-station, cold heading equipment, high-speed thread rolling machines, hot-forging lines, CNC machining facilities.