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about TRIS
about
Q&A
History
Philosophy
Company View
Industry
Semiconductor
Automobile
Petrochemical
Medical
Precision machinery
Products
Seamless Clean BA Tube
Seamless BA Tube
Seamless Coil Tube
Welded Tube
Special alloys
Download
Process
QC system
Inspection
Certificates
Catalog
TRIS PR Film
Contact
Contact & Location
Online inquiry
News
Korean
Certificates
Total
System
Product
Marine
ISO 9001:2015
System
ISO 14001:2015
System
IATF 16949:2016
System
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