VOLVLO certifikate

MAN certificate (GT POWER SYNT)

Rosneft certificate of conformity

Cummins Recomindation Letter for GT Turbo CNG 15W-40

Certificate of approval IATF 16946 - 2018

Appendix to certifikate IATF 16946 - 2018 - Hanval Inc office.

Certificate of approval ISO14001 2017-2020

API (American Petrolium Institute) License agreement

GT OIL in Atiel reestr

Diplom for 1st place in «Golden key. Car service's choice» award, «Quality and technology» nomination.