Customer Service

We value your relationship with our customers.

Reinspection Application

Go to Online Retest System→
Click on the Reinspection Application to download it.

※ Applications can be made in person, by fax, or by mail. In person, the application form is located in front of the reception desk.
- Address: 380, Nambu-daero, Osan-si, Gyeonggi-do, Korea NKTECH / Fax : 031-372-3679 / Contact : 070-4469-8659
Only the red square part of the application is required. Gas name for respirator retest