Shijiazhuang Jiukai Valve Manufacturing Co., Ltd. is a professional manufacturer of automobile valves and intake and exhaust valves of internal combustion engines. The company has a high-quality workforce with years of experience in valve development, design, production, and service. The company has advanced technology and excellent equipment, with various processing and testing equipment such as bimetallic friction welding and plasma surfacing. It also has advanced production processes such as conical surfacing, spiral polishing, rod end quenching, rod plating, nitriding, and surface laser treatment. The company introduces PAL CNC automation specialized production machinery; Especially in the surface treatment of the valve, the German QPQ salt bath soft nitriding process is adopted, which greatly enhances its surface strength, wear resistance, and fatigue resistance, and prolongs its service life. Executive standard: QC/T469-2002. Company tenet: people-oriented, winning with quality. Our company wholeheartedly provides enthusiastic service to people from all walks of life. We welcome calls, letters, inquiries, and business negotiations.