... , MR, PCR, the WB/DB, Chip parts test them strictly , and ensuring each part quality and ... can recycle 3-4 cycles;use none UV light protectyion for OPC drum.meanwhile it is equipped with ... pay attention to every step of producting, and test every product in printer before saling. B.Production ... work. 2, in use process, the user request for new selenium drum, must complete label, security labels ...