Natural Bitumen: This bitumen is extracted from mines, which are used in many industries, including road construction, the paint industry, polish and insulation of tanks and tubes and molding
Coal Tar: Coal tar is a black or dark-brown a residue produced by the heat treatment of coal. It is a solid at room temperature
Petroleum Bitumen: Mixture of hydrocarbons derived from petroleum. Black or brown, it varies from viscous to solid ، producing by air blowing process vacuum bottom (crude oil derivatives)