The group's principal activity is to provide professional consulting services for the technical and economic evaluation and prospect generation of petroleum and natural gas resources worldwide. The group also provides regulatory support, drilling, production and construction management, wellsite consultants, equipment verification and onsite quality surveillance to the oil and gas industry. The company provides services to petroleum and natural gas companies, oil service companies, utilities and manufacturing companies with petroleum and/or natural gas interests, institutional and individual investors, banks, independent power developers, drilling and producing property income funds and various agencies within domestic and foreign governments.