QG usoro igwe anwụrụ ọkụ gbara igwe ọgbụgba ọkụ maka ọgwụgwọ elu, na -ehichapụ ihe mkpuchi oxide, slag ịgbado ọkụ, na -apụta sheen dara, na -abawanye mpaghara elu, nke na -akwado UV. Ọ na -emetụta n'ahịrị mmanụ & kemịkal, nchara, kpo oku obodo mepere emepe, ọwa mmiri nke etiti.
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