Treatment of materials, namely metal casting, metal plating, gilding, silver plating, engraving, embossing, custom 3D printing for others; recycling, in particular of metals and precious metals; galvanization, surface galvanisation; coating services, namely chemical coatings, electrodeposition, coating of surfaces, CVD (chemical vapour deposition) coating and PVD (physical vapour deposition) coating; engraving, in particular engraving of jewellery and coin engraving, embossing, in particular ...