History
| 2019. 3 | Acquired ISO 14001 Certificate |
|---|---|
| 2018. 2 | Acquired IATF16949 Certificate |
| 2016. 4 | Acquired ABS Certificate |
| 2014. | Awarded 10 million Export Tower |
| 2013. 10 | Acquired DNV Certificate |
| 2013. 7 | Approved with the Certificate ‘NET’ (New Excellent Technology) from Government Ministry |
| 2013. 1 | Mass production for Seamless Coiled Tube (Over 100kgs per single coil) |
| 2012. 6 | Expanded New plant (15,485m2 ) & changed the company name as TRIS |
| 2009. 10 | Approved as a vendor for GDI Fuel rail pipe (Dongbo, USUI) |
| 2009. 8 | Acquired AD2000-Merkblatt W0 & PED 97/23/EC and TUV NORD AD2000-W0 Certificate |
| 2008. | Set up a Laboratory |
| 2004. 1 | Exported Precision Seamless tube for UHP gas industries to US (Valex Corp.) |
| 2001. 10 | Set up Technology Research Dept. |
| 2000. | Awarded Best company and moved to Dongducheon |
| 1992. 4 | Established as Sehan |