The boundaries of the chemical industry, then, are somewhat confused. Its 
primary 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 items, such as for 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 minerals) into more than 70,000 Air Compressor For Production Of Chemical Raw Materials china different items.