这些污染是由于试图在黑市上再生利用起动机电池的铅而产生的。
The pollution came from attempts to recover the lead while recycling motor batteries on the black market.
过去5年中，标准化的再生铅工业有关的政策和法规陆续出台。
Last 5 years, standardized Secondary Lead Industry-related policies and regulations promulgated one after another.
捕捉器催化再生，包括触媒涂层再生、铅燃料添加剂再生和非铅燃料添加剂再生。
Trap catalytic regeneration which catalyst coating regeneration, lead fuel additive regeneration and non-lead fuel additive regeneration were included.
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