Neutral silicone sealant: used for filling and sealing in metal, glass, mirror, glass window, aluminum products, pmma, silicone resin, vulcanizing silicone rubber, ceramics, natural and synthetic fiber, concrete, cement, marble, steel, etc. • Acid silicone sealant: used for filling and sealing in all kinds of interior decoration of car, nameplate, plastic material, pipe joints, glass, glass window, etc.