... safety 3.factory certificate 4.keep around 20 years PVC two way opening window 1.Lower price,high quality.We are ... achieve the performance of dust-proof, anti-mosquito Construction of two way opening window Name pvc window OpenningslidingProfilematerial: PVCseries:60mm, 65mm, ... carton according to different specifications. If sample window are shipped by express, we will offer track no. for you so ...