3W5W10W UV laser high precision marking of PVC plastic pipes   PVC plastic pipes are often used in construction, used for sewage transportation, drainage pipes, etc., and have very prominent characteristics in terms of hardness and cost performance. Generally, the production batch, graphic information, etc. required are marked on the surface of the PVC pipe. How to make the surface graphic of the PVC pipe not disappear during use, RFH gives the standard answer.