The excellent quality, the reliability, the precision and the professional attitude towards the prospective clients are highly estimated among the world's most famous multinational companies.

SHELL GAS and OMV - active market participants in Bulgaria, LUKOIL Romania SRL, Butan Gas Romania, AGIP Romania SRL, Romilexim Trading Ltd SRL, Crimbo Gas 2000 SRL in Romania, OMV and BPT (BPSerbia) in Serbia as well as MAKPETROL AD in Macedonia elected Kalvacha Engineering JSC for the deliveries of equipment for all their Gas Stations.