Yhmco DAJAAbout Us

2014

  1. Welders get ASME Section IX Certification
  2. Acquire China Type Test Certification

2013

Certified to JIS B 2309

2012

Establish Daikawakenn Technology Co., Ltd. and Rotina DAJA Tiger-Vac Taiwan Co., Ltd.

2009

Certified to ISO9001 : 2008

2007

  1. Traded in OTC:2007.8.1
  2. Certified to JIS MARK
    (JQA JIS B2312)
    (JQA JIS B2313)

2002

  1. Invested in UHP
    Components Production Line.
  2. Certified to ISO 9001
    (replacing ISO 9002)

1998

Certified to ISO140001

1994

Certified to ISO 9002

1981

Invested in Industrial Butt-Welding Pipe Fittings Production Line.

1977

Renamed and registered as Tachia Yung Ho Machine Industry Co., Ltd

1969

Renamed and registered as Tachia Yung Ho Machine Industry Limited Company.

1943

Tachia ironworks Established by Qing-Nian Huang.