Reflective Film and Maintenance Precautions 1. Substrate selection: It is recommended to use clean, flat aluminum plate or stainless steel plate. It is not recommended to stick directly to the surface of plastic, rubber, wood and fiberglass. 2. The substrate is polished and cleaned: The aluminum plate and stainless steel plate just after leaving the factory have a very smooth surface and are not conducive to bonding; they need to be sanded with 400 to 500 grit to ensure the bonding performance. Before bonding, scrub with a degreasing solvent and rinse with clean water. 3. Substrate surface cleanliness test: watering the substrate surface, if the formation of water film, then determine the cleanliness of the pass, do not form a uniform water film and scattered water, then determine the cleanliness is not qualified 4 Dry: water Rinsing and cleanliness are not acceptable. Www.czyfaudio.com