1. Precious metals: nickel, titanium, chromium, rhodium, molybdenum, cobalt, gold plating, silver plating, tungsten wire, gold plating silver wastewater, etc. 2. Scrap metal: white board, phosphor copper, red copper, copper sheet, tin slag, solder paste, aluminum, stainless steel, industrial iron, high-speed steel, etc. 3. Waste plastics: candles, acrylic acid. Electronic foot. Waste wires and cables, circuit boards, diodes, triodes, cartons, etc. 5. Waste batteries: Ni-MH batteries, lithium batteries, solar batteries, mobile phone batteries, notebook batteries, etc. 6. Waste cobalt: lithium cobaltate, lithium cobaltate, cobalt powder, cobalt mud, etc. 7. Scrap materials: battery positive plate, negative plate, battery waste, 42. Electroformed nickel, nickel scrap, battery conductive nickel sheet, nickel tape, nickel paper, nickel foil, nickel mesh, nickel alloy IX. Silicon wafers: solar wafers, solar cells, IC-grade silicon wafers, solar cells, monocrystalline silicon, polycrystalline silicon, packaged solar panels, etc. X. Others: Waste machines, machinery and equipment, waste cables and wires, inventory cleaning, demolition of waste factories, and recycling of waste metals in Dongguan.