Wanted: 除尘灰、冶炼渣、电镀泥、压滤泥、含锂灰渣、催化剂

Seeking to purchase dust, smelting slag, electroplating sludge, filter-press sludge, catalysts, and other scrap containing metals such as Ni, Cr, Mo, W, Co, Cu, Pb, Zn, Sn, Li.