A Professional Gear and Gearbox Manufacturer

About Us

YEH DER ENTERPRISE CO., LTD is a professional ODM / OEM manufacturer of various gear driving units, like gears, gearboxes, gear pumps, etc. Based on customers needs, all procedures from design, moldflow analysis, mold making, prototyping, injection molding, assembly and packing are accomplished under one roof. We examine and control each process strictly to ensure the quality of our products.

YEH DER is certified with IS0 9001:2008. The products YEH DER offers conform to the requirements of RoHS/REACH.
YEH DER is equipped with precision production and measurement equipment to offer customers precision gears, gearboxes, gear pumps, and other plastic parts. Our products are extensively applied on consumer products, like exercise equipment, medical equipment, automobiles, bicycles, solar-energy related products, monitors, home appliances, baby strollers, code printers, Fax machines, bill counting machines, laser printers, digital cameras, DVD players, stepping motors, linear actuators, remote-control products and others with special functions of gear driving.

We run business by a team. Our group, including YEH DER ENTERPRISE CO., LTD, Ultra Precision Co., Ltd.,
and Gear Driving System Co., Ltd., has professional engineering team and service to satisfy customers' needs.

  • 1989
    Yeh Der Enterprise Co., Ltd. was established to provide plastic gears, plastic parts and gearboxes.
  • 1997
    The China Yeh-Der factory was built in Zeng-Cheng City of Guang-Zhou to serve customers in China.
  • 1998
    Purchased precision measuring equipment, like vision measuring machine, gear rolling tester etc., to upgrade the ability of designing, manufacturing, in-process inspection and to produce precision parts.
  • 1999
    The quality management system of ISO was adopted. Our factories both in China and in Taiwan were certificated with ISO9002:1994.
  • 2002
    Yeh Der was certified with ISO9001-2000 version and established Ultra Precision Co., Ltd. in Wuku to offer molds of gears and gearboxes.
  • 2003
    China Ultra Precision Co., Ltd was built in Tsengcheng City of China. It¡¦s also a professional ODM/ OEM manufacturer of gears, gearboxes and plastic parts. All production processes are under one roof.
  • 2003
    A MAKINO CNC EDM was purchased for higher precision of molds of worms and helical gears.
  • 2004
    Gear Driving System Co., Ltd was built in Wugu for assembly of driving units, especially for gearboxes and gear pumps, etc. GDS offers ODM service with complete know-how.
  • 2005
    Purchased 3-D injection mold design software (K-MOLD) and moldflow analyzing software (Moldex 3D).
  • 2008
    ERP management system was adopted.
  • 2009
    Purchased Japanese TOKYO CNC gear measuring machine to measure the accuracy of worm and helical gear.
  • 2009
    Purchased leaking tester to make sure the perfect sealing of gear pumps.
  • 2009
    YEH DER WAS certificated with ISO 9001¡G2008
  • 2010
    Stepped into medical, automobile, solar-energy related industries.
  • 2012
    For expanding business, the second assembly line was built with more production equipment and employees.
  • 2015
    YEH DER ENTERPRISE Co. made the replacement of old with six brand-new injection molding machines to join the ranks of production in May 2015.
  • 2015
    Meantime, Ultra Precision Products Co. also introduced into four brand-new injection molding machines to join the ranks of production and replace the old.
5F., No.12, Sec. 1, Jhongsing Rd., Wugu Dist., New Taipei City 24872, Taiwan (R.O.C.)
Tel: 886-2-89769456/Fax: 886-2-89769459/E-Mail: business@ultra-gear.com