General Air Purification and Filtration.

一般空气净化和过滤。

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As we all know, endless mountain spring water for thousands of years, clean and sweet, its purification and filtration can not be synthetic materials.

众所周知，高山泉水千百年来源源不断，洁净甘甜，其净化过滤绝非人工合成材料所能得。

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Orange County takes "highly treated" sewer water and sends it through various filtration and purification processes, until the final product exceeds the standards for most drinking water.

据报道，奥兰治县采用了非常“高效的污水处理”技术，经过层层过滤和净化过程，最后的水质超过了多数饮用水的标准。

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The company vows to double its revenues from 17 clean-technology businesses, ranging from renewable energy and hydrogen fuel cells, to water filtration and purification systems, to cleaner aircraft and locomotive engines.

ECONOMIST: The greening of General Electric