40 Treatment of metals, precious metals, jewelry, precious stones, rubber, gum, glass, plastic, mica, cardboard and paper by molding, welding, punching, die-casting, cutting, drilling, laminating, anodizing, polishing, plating, milling, grinding, cleaning, printing, painting, extruding, etching, coating, roughening, metallization, vapor deposition, heat treatment, integrating, injecting, connecting, engraving, coloring, texturing, decorating, forging, casting, glossing, blasting, compositing, melting, fusing, brazing, soldering, turning, trimming, edging, refining, washing, rubbing, protecting, covering, finishing, peeling, boring, plating, carbonizing, integrating, combining