耐久性：一般外保温层和建筑物应同寿命，使用年限也要在几十年以上。
Durability: general insulation layer and the building should be with life, use fixed number of year will in a few years.
作为一项反映材料优劣的重要的评价指标，天然耐久性直接决定了材料的使用寿命。
As an important evaluating index reflecting the quality of materials, natural durability can directly determine the using longevity of materials.
提起可持续性，我们想到的通常是耐久性、长寿命以及尊重环境。
When we think of sustainability, often we think of durability, longevity and environmental respect.
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