Product Overview 1 Brand background: Nippon Steel&Sumikin Chemical is a well-known chemical enterprise in Japan that focuses on the research and production of specialty chemicals. The SILPLUS J300 (9H) film produced by it is a high-performance organic silicon coating material with excellent anti fouling, waterproof, and weather resistance properties. 2. Super strong hardness: The “9H” in the product name represents its hardness level, reaching a hardness level similar to glass,…