# MTT fittings are manufactured according to ASME B16.22 standard / ASTM B-88, Type K with the thicker wall thickness for the safety factor of Safe Working Pressure.
# MTT’s fittings are marked to R410A for suitability to high-pressure refrigerant systems.
# The MTT fitting manufacturer have got the quality management system certificate ISO9001, environmental management system certification ISO14001. Meanwhile, MTT’s fittings have passed the NSF(USA), CRN (Canada) and WRAS (UK).