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| CERTIFICATIONS (under construction) | |||
 |
Gost | |
Rostechnadzor |
|
Agrement Tehnic | |
Rocert |
|
DVGW Bronze | |
Za Varilstvo |
|
DVGW Copper | |
DVGW Gas |
|
DVGW Serie 3000 | |
DVGW H2O |
|
SZU-Copper-Bronze | ||
