manufacturer professional on building glass tempered glass,insulated glass,laminated glass,LOW-E glass certificate:CCC,CE,EN 1) Tempered glass is with high strenth,has enhanced thermal resistance, and breaks ... thickness:3-25mm4)Certification:Accordance with GB15763.2-2005 Tempered Glass Standard.Pass Chinese Safety Glass Compulsory Certification(CCC)Accordance with EN 12152-1:2000 ...