塑钢型材的主要市场是工程，使用年限1年左右。
Model steel profile of the main market is engineering, use fixed number of year 1 years.
塑钢门窗是一种节能环保的新型建筑门窗，目前已被广泛地应用于各类建筑工程。
In recent years, plastic-steel doors and Windows have been widely used in architectural engineering because of the advantage of sound-proof, heat preservation and antisepsis.
塑钢门窗是一种节能环保的新型建筑门窗，目前已被广泛地应用于各类建筑工程。
In recent years, plastic-steel doors and Windows have been widely used in architectural engineering because of the advantage of sound-proof, heat preservation and antisepsis.
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