we produce various models of PCR used for toner cartridge,we adopt the PU material for the sleeve,will not pollute the OPC ... ,Canon,Sumsung toner cartridge. our PCR are both nylon and PU,will not pollute the OPC drum easily . with excellent performance ... ,Pakistan,Poland,Russia etc. Here are our some popular models of Charge Roller PCR for: 1)HP Q435A/ Q436A/ Q388A/ C1338A/ C1339A ...