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