History 2018 08 Patent 2017 01 Manufactured and registered specific equipment 02 Manufactured and registered specific equipment 04 Start-up certificate 05 INNOBIZ certificate 11 Certificate of design registration 2014 07 Registered in Busan Chamber of Commerce & Industry 2013 03 Renamed as Seo Heung Tech 11 Obtained a gas supplies manufacturing license 2009 08 Relocated the plant 2005 03 Re-incorporated as Seo Heung Gas Tech 03 Obtained an ISO 9001 04 Registered the construction business (class 1 of gas equipment setup) 1998 01 Incorporated Seo Heung Industry