Looking for the top PVC Belt Conveyor Manufacturers in Chennai? Well, One of the top PVC conveyor belt manufacturers in Chennai is Doris Engineers Pvt. Ltd. The greatest class of thermoplastics are called polyolefins, and they are polymers of basic oil-based compounds like ethylene. Being the most widely used plastic in the world, polyethylene is probably the polymer you see most frequently in daily life. The standard Doris structure uses polyester fabric as the pressure member and synthetic or elastomer coatings of PU/PVC SI/PE carpeted belts on the fabric. We are the leading polyvinyl chloride belt conveyor manufacturers in Chennai.