There are many other different kinds of industries, and often organized into different classes or sectors by a variety of industrial classifications. Industry classification systems used by the government commonly divide industry into three sectors: agriculture, manufacturing, and services. The primary sector of industry is agriculture, mining and raw material extraction. The secondary sector of industry is manufacturing. The tertiary sector of industry is service production. Sometimes, one talks about a quaternary sector of industry, consisting of intellectual services such as research and development (R&D). Industries can also be identified by product: chemical industry, fine chemicals industry, petroleum industry, automotive industry, packaging industry, hospitality industry, food industry, fish industry, software industry, paper industry, furniture industry, testing equipment industry, safety equipment industry, entertainment industry, etc. Fine Chemicals Industry: In chemistry, a chemical substance is a material with a specific chemical composition. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Some typical chemical substances are diamond, gold, salt (sodium chloride) and sugar (sucrose). Generally, chemical substances exist as a solid, liquid, gas, or plasma and ...
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