The most concerning thing of recovery is the durability. When leaving the factory, laminated glass may not have any problem in appearance but after the exposure for a long time, the stability will be less and will significantly increasing the risk of degumming and bubble bounce because of the less fresh pure resin. Instead to using KB PVB film, the processing quality of raw materials is very stable even though for long time exposure. In order to ensure fresh of laminated finished glass for a long time, KB PVB film will test the films according to EU standards strictly. Therefore, customers can adopt us on high-grade construction projects.