4年 废镀金; 废镀银; 废旧电池正、负极片; 废钛; 废铜; 废电线电缆; 废铝; 废不锈钢; 废锌合金; 废镍; 废锡渣; 废硅胶; 废亚克力; 废ABS; 废PC; 废PP; 废PVC; 废PET; 废吸塑; 废电池;