发布时间:2025-01-23 15:09:30
PVC材料。PVC材料具有防水性能,能有效阻挡水分渗透,保护坐垫免受雨水液体的侵害,有良好的抗紫外线特性,能有效抵御阳光的辐射。
消防验收规范要求手动装置开启消防排烟窗平开窗扇的开启角度多少
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