Worm and Worm Gear, Timing Pulley, Gear Shaft manufacturer / supplier in China, offering Factory Customized ISO/Anti Standard High Precision Spur Helical Gear for Automatic Equipment, High Precision Customized Carbon Steel Spur Helical Gear Pinion for Motor with SGS Certificate, Available Forging Tl Wood Box / Carton Adjustable Motor Pulley and so on.