Natural gas companies

Camuzzi Gas is a distributor of natural gas products.

Advent Technologies Holdings is a company that specializes in the development of high-temperature PEM fuel cells.

Dorchester Minerals engages in the acquisition, ownership and administration of producing and nonproducing natural gas and crude oil royalty, net profits and leasehold interests.

Canvas Energy (formerly Chaparral Energy) is an oil and natural gas exploration and production company.

NET Power is a company engaged in the development of a power system that produces electricity from natural gas.

Adams Resources and Energy, Inc. is a company engaged in the production and marketing of crude oil, natural gas, and liquid chemical products.

ENN Natural Gas (新奥天然气股份有限公司) is a company that provides natural gas production and distribution services.

Shaanxi Provincial Natural Gas (陕西省天然气股份有限公司) is a company that specializes in the operation of natural gas pipeline networks and integrates downstream distribution business.

ABO-Group has developed into a cluster of integrated environmental companies specialised in testing and engineering in various sectors such as soil, environment, geotechnical, energy and waste management.

Kiwetinohk Energy is a manufacturer and seller of natural gas and renewables.

PrimeEnergy Corporation is an independent oil and gas company actively engaged in acquiring, developing and producing oil and natural gas.

China Gas Holdings is a gas operator and service provider.