... ,2.8mm 3) 50 years life 4)GB/T8804-2004 white pvc profie for window factory 60mm casement ,80mm/88mm sliding ... , white color, double color co-extrusion and strip seal upvc profile. ... elasticity: 2200Mpa Impact strength of stretching : 600KJ/m2 4) Color: white,double-colors and strip co-extrusion5) Standard: GB/T8814-2004 ...