American style PVC double hung lift up slide glass windows on China WDMA exterior famous for good quality in

famous for good quality in the world

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American style PVC double hung lift up slide glass windows on China WDMA exterior famous for good quality in1. Impact resistance due to aluminum plastic composite structure it is super hardness and good rigidity 2. Heat resistance it has good sealing performance, truly cool in summer and warm in winter. 3. Noise reduction due to thermal break structure , you will feel decibel coming down 80% even your house is at noisy city center 4. Color can be combined in the same window