The most potent greenhouse gas is HFC-23, a by-product of HCFC-22, a chemical used in, among other things, fridges.

温室效应最强的其他十三氟甲烷(HFC - 23)，是用于冰箱制冷的化学物质HCFC - 22的副产品。

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For instance, HFC-134a and a whole family of related chemicals could be dealt with by extending the Montreal protocol created to protect the ozone layer from similar industrial gases.

比如，HFC - 134a和全部与之相关的化学物都能够通过推动蒙特利尔协定书来处理掉，这个协定书用以保护臭氧层免受类似工业气体的污染。

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It is also trialing a new, less damaging type of HFC gas (R407a) to replace existing HFC (R404a) gas in in-store fridges by 2012.

并且测试新的危害较小的HF C气体(R407a)，在2012年前将用其替换现在店铺所用冰箱使用的HF C气体(R404a)。

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The same is not true for, say, HFC-134a, a gas with various industrial uses that delivers more than 1, 000 times more warming than carbon dioxide, mass for mass.

ECONOMIST: Climate change

What's more, China now levies a 65% tax on HFC-derived credits, further distorting the market.

ECONOMIST: The treaties that pay you to pollute

Below is a long-term dividend history chart for HFC, which Dividend Channel stressed as being of key importance.

FORBES: HFC Added as Top 10 Energy Dividend Stock With 1.48% Yield