1.PVC profile for door and window 2.Push-Pull type; 3.Moving open type 4. advanced production ... lines Features:1)Good endurance (usually above 30-year life),2)Fine airproof (can save 10% of energy and can effectively ... multilayer window boards, 150,000-square-meter multilayer shelf boards, 2,500,000-square-meter polycarbonate boards, and 1,000,000 ...