Last 5 years, standardized SecondaryLead Industry-related policies and regulations promulgated one after another.
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。
2
Lead Mine supply reduces greatly in recent years while demand is still strong, so secondarylead production involves for balancing market.
由于近几年铅矿供应大大减少，而需求却依然旺盛，需要二次铅的生产也参与进来以平衡供应。
3
Eventually flow is a native of lead battery plants and smelters accounted for 17%, a small smelter accounted for 41%, the size of Secondarylead plants accounting for 42%.