Since December 2006, Gardner Business Media has computed a business index for the U.S. metalwork-ing industry. In December 2011, Gardner began to survey manufacturing facilities across all of the durable goods sectors covered by its publications. After tracking the index's performance in these sectors for two years, we are now ready to publish regular reports. In "By the Numbers," I'll present to HPC readers the U.S. Composites Business Index (CBI).
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机译：自2006年12月以来，Gardner Business Media已计算出美国金属加工行业的业务指数。 2011年12月，Gardner开始对其出版物涵盖的所有耐用品行业的制造设施进行调查。在跟踪该指数在这些领域的表现两年后，我们现在准备发布定期报告。在“按数字”中，我将向HPC读者介绍美国复合材料商业指数（CBI）。
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