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2005年末《RSI》杂志发表了美国屋面行业现状调查报告。该调查是针对平屋面承包商和坡屋面承包商的问卷调查,现将调查结果作简要介绍。
In late 2005, “RSI” magazine published a report on the status quo of the American roofing industry. The survey is aimed at the flat roof contractor and slope roof contractor’s survey, the survey results are briefly introduced.