We specialize in the manufacturing of metal parts and integrated OEM, from design, development, tooling, mass production, to whole process integrated OEM, with features of consistency, professional quality and strict quality control.

The heritage of traditional craftsmanship combines with modern technology; we serve our customers with policies like integrity, innovation, quality, honesty, efficiency. OEM processes include press, CNC lathe, CNC miller, forging and welding etc.

Our clients get confidence from us, we are now marketing in Japan, U.S.A., Australia, Holland, Sweden, Israel, etc.


1983 The company was founded by Mr. Chen Yuan Tsai, worked in development and production of press mould, having substantial technology and experience in continuous press.

1991 The company relocated from Sanchun City of Taipei County to Dayuan Town of Taoyuan County, its workshop was enlarged to 400 pins.

1993 Grandtech Metal Industrial Co., Ltd was established. It formally transformed into an integrated plant concerning precise metal components through accumulated technology and skill over more than 20 years.

2009 The company relocated from Dayuan Town of Taoyuan County to Hsinwu Town of Taoyuan County, its workshop was enlarged to 1000 pins.


‧Manufacturing/development of tooling/mould
‧Manufacturing of parts/components for car/motorcycle
‧Precise press/manufacturing of thick plate
‧Manufacturing of metal building materials
‧Manufacturing/processing of various pipes, like bending, pressing, shearing, expanding
‧Integrated OEM
‧Assembly production