... the wooden frames and sashes is used for anti-UV & anti-acid rain 2) The hollow glass embedded has ... degreasing, finger joint, integrated, Better preservative, anti-deformed & performance, Insect proofing, anti-warping, anti-distortion performance. 2. Surface Treatment: handed polish ... (2)water proof , permeable to air, anti-uv for a long time , anti-mold , preservative. (3) good adsorption capacity no ...