... 4.ISO,CCC,CE 5.Super quality and competitive price low e / Insulated Building GlassProcessing techniqueInsulated Glass is a prefabricated unit made ... around with compound sealant. Normally, the spacers width of insulated glass is 6mm,9mm,12mm,16mm, ect.Feature1.Lower U ... , to ensure the good seal performance.3.Sound isolation. Insulated glass can lower the noise, especially when filled with inert ...