RFH solid-state UV laser high-definition marking traceability information on PVC plastic pipes   PVC plastic pipe is a kind of metal pipe with good hardness. It is generally used in many aspects such as machinery and construction. It has played an important role in the development and use of human beings. PVC plastic pipes often carry traceability information, and the production date, manufacturer and location can be found in the first time, so how to mark the round pipe fittings?