N'echiche ọdịnala, kaadị ọla bụ nke ọla na igwe anaghị agba nchara. Ọ na-akwado teknụzụ usoro ọhụrụ nke na-eduga, ịnwe, stamping, corroding, printing, polishing, electroplating, coloring, dispensing, packing and other flow arụmọrụ. Mgbe polishing, corrosion, metal kaadị nụchara anụcha ...
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