The drag chain conveyor is a very efficient way of conveying materials. The drag chain conveyors are made in such a manner that they can be efficiently utilized in conveying materials in industries. The design of drag chain conveyors » is such that it allows these conveyors to be used in conveying materials like coal, ash, biomass, sludge, chemicals, and abrasives. It is the Four-Teckhenviro company that makes very efficient drag chain conveyors for industries.