Refinery companies

UKRNAFTOKHIMPROECT (УКРНАФТОХІМПРОЕКТ) is a company that specializes in designing oil refining and petrochemical plants.

Minerals Joint Stock Company 3 (Công Ty CP Khoáng Sản 3, farmerly known as Mineral Development Company III) is a mining company that specialized in the exploration, production, and trading of minerals.

Million Air Honolulu (also known as Freeman Holdings Of Hawaii) is a petroleum and petroleum products merchant wholesaler.

Zhejiang Eastriver Energy S&T provides oil and gas products and services.

Naftokhimik Prykarpattya is an oil refining company that supplies natural gas.

Mesa Oil is a company that processes raw products, provides systems of recycling and oily-water treatment.

Lubeco is a provider of metal finishing services to commercial, aerospace, and defense industries.

Saratov Oil Refinery is a company that engages in oil refining activities.

Slavneft is an energy company.

Nagarjuna Oil Refinery is an oil refinery.

Toa Oil is an energy supply company.

Umbria Olii International is a company that specializes in the refinery, packaging, and trade of olive oils.