Yeh Der Enterprise Co., Ltd., established in 1989, specialized in the manufacture of high quality gears, gearboxes, and accessories. Now, our product series including Plastic gesr, Engineering Plastic Machining, powder metallurgy gear, gearbox, prototype, injection molding, RC helicopter and assembly. In order to provide our quality and reliable service, we gained the ISO 1994, ISP 9001-2000 approval & enjoyed a good reputation for our products. In answer to customer's needs, the Engineering staffs are committed to continuous improvement in every aspect of the products and services we deliver. In addition to existing Plastic gears, custom-made products according to customers' designs and specifications are welcome.