2019
- New welded pipe mill established. (Douliou Mill 2)
2017
- New trademark registered
2016
- Capital: USD 136million
2015
- Bonded Factory in Douliou Mill 1 established
2014
- Certification for CE MARK
Construction Products Regulation (CPR) by TUV
2012
- Rebranded as "YC INOX" from "Yeun Chyang"
2011
- JIS MARK Certificate issued by JQA
- New investment in laser welding
2009
- Certification for ISO 14001 by TUV
- Certification for OHSAS 18001 & TOSHMS by TUV
2007
- New coil service center established. (Douliou Mill 1)
- Laboratory management system by ilac-TAF
ISO 17025:2005 Certificate
(Laboratory Accreditation Code:1894)
2005
- Coil service center established for HR
- Certification for PED 97/23/EC & AD2000 by TUV
2004
- Coil service center established for CR
2000
- The Headquaters established in Shijou, Changhwa.
1999
- Listed in Taiwan Stock Exchange Market (TPE: 2034)
- Capital: USD 32 million
1994
- Authorized by ISO 9002
1973
- YC founded with initial production of welded pipes & tubes
