When people bought this convenience, what they were really buying was Polyethylene Terephthalate, or PET, the single most important innovation in the industry's history.

消费者购买的所谓便利不过是聚对苯二甲酸乙二醇酯（PET）——工业史上极为重要的发明之一。

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More and more, however, manufacturers are making them out of Polyethylene terephthalate, commonly abbreviated as PET.

但是越来越多的制造商正用聚对苯二甲酸乙二醇酯（通常简称为PET）做茶包。

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By analysis of the production of polyethylene terephthalate (PET), the adjustment and effect of esterification process using purified terephthalic acid (PTA) purchased outside were discussed.

通过对聚对苯二甲酸乙二醇酯(PET)生产的分析，论述了当使用外购精对苯二甲酸(PTA)时，酯化工艺的调整及效果。

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Also, in 2010, the South African retail giant became the first to offer customers wine bottled in the eco-friendly PET (Polyethylene Terephthalate).

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