With the excellent light transparent performance, bearing high/low-temperature, elasticity and well-sticking performance, the PVB is becoming the necessary productions materials of all kinds of safety glass. Laminated safety glass is a special glass which inserts the PVB film between two pieces of common glass. When it is collided with other blocks, the PVB film can offset the compact pressure and don't make the glass shattered and protect the safety of people, which is mainly used in the field of auto motors, high-building, aviation, navigation and etc. Meanwhile it has the excellent performance of voice-proof, light-controlling, heat-proof, anti-fog and etc with which makes the PVB become the ideal materials for the processing of common glass.