TDF stands for Tire Derived Fuel in which rubber is used to replace or compliment other fuel sources for manufacturing facilities like paper mills, cement kilns, and other boilers or waste incinerators. TDF is made by Eco Giant Shredder for shred range in size from 50mm-150mm or by Eco Grater the Secondary Shredder for wire free chips with a specific size required by the buyer of the chip with size range from 38mm-16mm.