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No, the current PP material is a difficult material. It is basically not sticking directly through the adhesive glue. Generally, it is generally treated with a PP treatment agent to take advantage of the bonding rubber, which is increasing, most Both substrates, such as glass, metal and most engineered plastics can be directly bonded, but some similar materials for PTFE, PA, Polyethyl, polyproprind, PET, etc., usually not good for these bonding effects. Materials, first use dedicated undercoat to apply gelatin.