watertightness,windtightness,airtighness recyclable material, environment friendly products WIND RESISTANCE3.5≤P3<4.0WATERTIGHT PERFORMANCEΔP≥700AIRTIGHT PERFORMANCE q1≤0.5(m3/m·h), q2≤1.5(m3/m2·h)THERMAL BREAKK<1.5NOISE INSULATERw≥45LIGHTING PERFORMANCETr≥0.60 We can provide our customer good quality PVC profiles, PVC window, PVC window profiles