Down hole Special Service Company of Zhongyuan Oilfield
Downhole Service Division of Southwest Company
China Ocean Petroleum Technology Service Company
中海石油技术服务人才技术开发公司
中海石油技术服务公司
energy conservation service company
energy saving service company
Self-service service terminal
single-plane (through-plane service) service
Technique Service Company
China Petroleum Technology Service Company
Geology Service Company
Break of Service， Out-of-Service
free medical service; free medicare; public health service
in service and out of service
overland common point service {= OCP service}