There are four main types of industry: primary, secondary, tertiary and quaternary. The type of industry a country specialises in changes over time. There are social, environmental and economic ...

and secondary industry: the processing of these raw materials into usable products. Next in the chain come tertiary and quaternary industries, also known as the service industries. Tertiary and ...

Broad-ranging Personal Services 102.0 1.2 102.0 0.5 Broad-ranging Business Services 101.8-1.2 101.1 1.4 Industries that contributed to the changes in this month Report of Industries that contributed ...

Oil production is separated into three phases: primary, secondary and tertiary, which is also known as Enhanced Oil Recovery (EOR). Primary oil recovery is limited to hydrocarbons that naturally ...

Brent Oil Forecasts – WTI Oil Pulled Back Below $70.00about 6 hours ago The activity index of the tertiary industry helps to understand an overall picture of industrial activities, inclusive of ...

ZHANG SHU/FOR CHINA DAILY China has seen a growing workforce in the tertiary industry in recent years, driven by the country's improving economic structure and robust employment policies ...

Broad-ranging Personal Services 101.5-0.4 102.4 0.7 Broad-ranging Business Services 102.8 0.2 103.4 2.7 Industries that contributed to the changes in this month Report of Industries that contributed ...