_ Dong Kee Metal Recycling Recycling (certified) _ metal recovered from Dongguan Chang Ping Tung Kee renewable resource recycling offer. Dongguan Chang Ping Tung Kee renewable resource recycling (www.dongji8.com) is specialized in the "whole plant equipment recycling, electronic stock recovery, metals recycling, metal recycling, plastic recycling" of the enterprise, the company adhering to the "honesty, hard service "philosophy, to provide you with the highest quality products and services. Welcome to inquire! Contact: Xue Wendong. Professional recycling: metal: copper, aluminum, tin, iron, stainless steel, lead (batteries). Metals: nickel, molybdenum wire, tungsten steel, gold, silver. Plastic [materials, miscellaneous material]: ABS, PS, PVC metal recycling, PC, PP, PBT. Undertake a package plant, the relocation of factories, hotels. Recycling scrap metal recycling plant in municipal engineering, car batteries, electric vehicles. Collect scrap machinery, air conditioning, electronic products, mobile phone batteries, laptop batteries. Cash door (expensive) recovery. There intermediary commission. Welcome calls, sincere service! After the motherboard old mobile phones, computers destroyed into small pieces, add a concentration of 15% to 70% of the nitric acid solution of metal recycling factory, a water bath heated and stirred. Scrap gold with the substrate surface after shedding of metal recovery projects, the heating was stopped, cooled, poured upper solution, Cu, Ag, and Pd, etc. may be separated by extraction of sodium chloride was added, oxalic acid, ammonia, etc. contained in the solution. End of the container is a mixture of gold foil and the substrate after the peeling off the mixing body flush, the flushing stopped visible when the foil substrate than the slower sedimentation rate of the matrix quickly settle to the bottom of the container, and the foil is gradually sinking in the water suspension, the When pouring water in the container, the gold flowing out, the matrix left in the container. Achieve a recovery of gold, gold from scrap purity of about 99.9%.