Plasma enhanced chemical vapor deposition (PECVD) is one of the basic methods for material surface modification and thin film deposition. The plasma is used to cause cracking and polymerization of organic monomers in a vacuum chamber to form a dense structure. Protective layer. This film has high barrier properties and pro/hydrophobicity, which is very suitable for bottom/top coating of lamp reflective film products. Dahyong vacuum DYP series combined with PVD and PECVD technology, complete the process of primer, coating and topcoat in the same chamber, greatly reducing the paint waste and environmental pollution caused by atmospheric spraying.