Plastic Pulley Wheel We can produce round belt pulleys, flat belt pulleys, V-belt pulleys, u v groove pulleys, etc. Any custom plastic pulley to your specifications. Founded in 1978, Zhongde is a professional manufacturer focusing on OEM & ODM customized services. Based on 40 years of technology deposition, we have developed a one-stop solution from mold designing and rapid prototyping to mass production. Our manufacturing capabilities include injection molding service, compression molding service, CNC machining service, metal stamping service, 3D printing service, etc.