Zinc plating; providing information relating to material treatment; chromium plating; chromium plating of metal articles; chromium plating of metallic objects; tin plating; heat treatment of metals; galvanising of metal; enamelling of metals; metallizing; magnetization; coppering being metal plating; nickel plating; electrochemical treatment of metals; metalworking; metal coating not painting, namely, applying decorative and protective coatings to metal by means of galvanization; blast treatm...