The choice of this enclosure material responds, on the one hand, to its role as a solar filter offering at the same time porosity, light entrance and ventilation to the elevator case.
外围护结构材料的选择，一方面，由于孔隙率的控制使其成为太阳滤波器，可以照入一些阳光，照亮入口空间，也有利于梯井内的通风。
The latent pigment is a kind of new material which is used as colorant, information material, photographic material and light filter.
隐颜料是用于着色以及信息记录、照相显影、滤光器等领域的新材料。
The light panel structure, the high quality PET synthetic fiber filter material is with features of low initial pressure, good fire-proof function.
轻便的板式结构，优质的聚酯合成纤维过滤材料，初阻力低，防火性好。
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