The boundaries of the chemical industry, then, are somewhat confused. Its main raw materials are the fossil fuels (coal, natural gas, and petroleum), atmosphere, drinking water, salt, limestone, sulfur or an Air Compressor For Production Of Chemical Raw Materials china equivalent, plus some specialized raw materials for special products, such as for example phosphates and the mineral fluorspar.
The chemical industry comprises the firms that produce commercial chemicals. Central to the modern world economy, it converts raw materials (oil, natural 
gas, air, drinking water, metals, and nutrients) into a lot more than 70,000 different products.