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美国道化学公司宣称,它们是美国第一家开始用“最适于排空的”55加仑(1加仑一3．785升)桶包装精选产品的企业。美国环境保护局要求包装桶在处置前必须排空
U.S. Dow Chemical claims they are the first company in the United States to begin packaging packaged products “best suited for emptying” 55 gallons (1 gallon to 3.785 liters). The US Environmental Protection Agency requires that the drums be emptied prior to disposal