制定科学、先进的定额消耗标准。
To make a scientific and advanced quota consumption standards.
中国的环境法规较为宽松，因而PVC生产成本极富竞争力，而发达国家的污染控制与能源消耗标准较高。
China's loose environmental regulations enable the industry to make PVC at very competitive costs, while developed countries enforce higher standards for pollution control and energy consumption.
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