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