Gear, Spur Gear, Gear Shaft manufacturer / supplier in China, offering OEM Heavy Duty Large Diameter Wire Rope Pulley Wheel Wire Aluminum Timing Pulley, Factory Custom Aluminum Timing Pulley 2gt 3gt 5gt T10 At5 At10 S2m S3m S5m Htd 3m 5m 8m Synchronous Pulley, ISO Standard Black Htd 5m 8m 14m Synchronous Belt Motor Pulley Synchronous Pulley and so on.