PVC Casement window 1,Environmentally-friendly 2 ,Sun-shading 3,High strength 4, ... ) Chinese top brand hardwares like: GuoQiang,LianXin,ChunGuangMosquito screenMade of nylon or metal netAccessoriesReinforcement steel:1.2mm,1.5mm,2.0mmSealing ... :2004,OHSAS18001Tech data1) Acoustical insulation: 33 dB2) K-value of window: 1. 9 w/ m2. K3) Wind resistance: 3600 Pa4) Air ...