Nanocomposite graphene rollers, PTG polymer composite material rollers manufacturer / supplier in China, offering Industrial Material Carrier Handling Steel Belt Conveyor Trough Idler Roller with Bracket Frame, Energy-Efficient Ptg Dual-Antibody Polymer Composite Idler Roller for Low-Power Belt Conveyor Systems, High Friction Conveyor Belt for Inclined Industrial Use, Preventing Slippage of Wet Materials in Food Processing and so on.