Recovery, disposal, processing and utilization of waste catalysts and activated carbon containing palladium, manganese, platinum, silver, copper, silicon, zinc, cobalt, molybdenum, iron, antimony, chromium, bismuth, tungsten, rhenium, vanadium, rhodium, nickel and alumina; Smelting and sales of non-ferrous metals; Purchase and sale of scrap metal; Collection, transfer, treatment, sales and comprehensive utilization of hazardous waste, domestic garbage, electronic waste and waste; Chemical products (excluding hazardous chemicals