Throughout the process, TRIS operates a quality management system based on the methods
and standards set out in IATF 16949 in accordance with customer requirements.
For keeping the stable quality level, TRIS continuously performs Corrective Actions
for solving a problem and preventing recurrence with definition, analysis of problems, improvement and standardization.
TRIS uses high quality of cold drawn hollow or hot rolled hollow as raw material and has strict import test.
Also, every raw materials have Heat number and Lot number for traceability.