Dioxins, furans and metals are persistent and bio-accumulate in the environment.
二恶英、呋喃和金属具有持久性并可在环境中生物累积。
The group of 12 listed highly dangerous substances includes mentioned earlier dioxins, furans and biphenyls (60).
该组中列出的12个高度危险的物质，包括前面提到二恶英，呋喃和多氯联苯（60）。
When this is done, chlorinated byproducts such as furans and dioxins are produced.
当做到这一点，氯化副产品，如二恶英和呋喃的生产。
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