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