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The Service industries (More formally termed: 'tertiary sector of industry' by economists) involve the provision of services to businesses as well as final consumers. Such, therefore, include accounting, tradesmanship (like mechanic or plumber services), computer services, restaurants, tourism, etc.

Hence, a Service Industry is one where no goods are produced whereas primary industries are those that extract minerals, oil etc. from the ground and secondary industries are those that manufacture products, including builders, but not remodeling contractors.