Rastra, a company based in Scottsdale that makes concrete from recycled styrofoam, increased its sales by 385% between 2002 and 2005 and is looking for more American factories.

• 斯科茨代尔本地的Rastra是一家通过回收聚苯板制作混凝土的公司，它的销售量在2002年到2005年之间增加了385%25，现在正寻找更多的美国加工厂。