Headquartered in Madrid, Spain, CEPSA is an integrated energy company active in Exploration and Production, Refining, Natural Gas, Electricity and Chemicals. CEPSA has 21 Mt/year refining capacity integrated with their chemicals business. CEPSA operates on 5 continents and has more than 10 000 employes. CEPSA has been a ZANIN customer since 2020.


Unipetrol is a part of PKN Orlen Group - a major regional refiner in Central and Eastern Europe. Based in Czech Republic, they operate two refineries with a joint capacity of 8.7 MtA, a 544 ktA Olephine plant and 3 polyolefine plants. Unipetrol is an important regional supplier of fuels, lubes and plastics. Unipetrol has been a ZANIN customer since 2020.


BASF-YPC Company Limited is a joint venture between BASF and SINOPEC, and is regarded as a role model of successful Sino-German cooperation. BYC operates according to BASF "Verbund" concept centered around a 740 ktA olephine plant. BYC has been a ZANIN customer since 2020.


NIS Group, headquartered in Novi Sad, Serbia, is one of the largest vertically integrated energy companies in Southeast Europe. NIS is a member of GAZPROM NEFT group. In addition to a large E&P and Natural Gas business NIS also operates a complex 4.8 MtA refinery processing a mix of imported and domestic crude oils and running an FCC, a Reformer, a modern diesel line and a modern Hydrocracker with a Delayed Coker unit being built. NIS has been a ZANIN customer since 2020.

Rompetrol - KMG International

With 6,000 employees, KMG International a.k.a. Rompetrol carries out operations throughout Europe and Central Asia, being active primarily in trading, refining and petrochemicals. Rompetrol's Petromidia Refinery is the largest Romanian oil refinery and one of the largest and most complex in Eastern Europe with 100 000 bbl/day capacity and Nelson Complexity index of 10.7. Rompetrol has been a ZANIN customer since 2021.

PETRONAS Chemicals Group Berhad (PCG)

PCG is the leading integrated chemicals producer in Malaysia and among the largest in Southeast Asia. PCG manufactures, markets and sells a diverse range of chemical products - olefins, polymers, fertilisers, methanol and other basic chemicals and derivatives. Their production sites are fully integrated from feedstock to end-products, with a combined total production capacity of 12.8 MtA. PCG has been, through our partnership with AspenTech, a ZANIN customer since 2021.

Argus Media

Argus is an independent media organisation headquartered in London and has 28 offices in the world’s principal commodity trading and production centres. Argus produces price assessments and analysis of international energy and other commodity markets and offers bespoke consulting services and industry-leading conferences. Companies in 140 countries around the world use Argus data to index physical trade and as benchmarks in financial derivative markets as well as for analysis and planning purposes. Argus has been a ZANIN customer since 2022.


ENAP (Empresa Nacional del Petróleo) is the National Oil & Gas company of Chile. In addition to Exploration and Production operations ENAP operates 3 oil refineries with a total capacity of 220 000 bbl/day. ENAP has been a ZANIN customer since 2022.