The boundaries of the chemical industry, then, are somewhat confused. Its main 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 example 
phosphates and the mineral fluorspar.
The chemical industry comprises the companies that produce industrial Air Compressor For Production Of Chemical Raw Materials china chemicals. Central to the modern world economy, it converts recycleables (oil, natural gas, air, drinking water, metals, and nutrients) into more than 70,000 different products.