40 Treatment of materials, namely, metal treating, namely, by surface treatment, in particular using shot blasting method; treatment of materials, namely, treatment of components, namely, light metal components, namely, of aluminium and magnesium; treatment of materials, namely, mechanical treatment of vehicle structural parts and light metal wheels; deburring of components, namely, motor components, vehicle structural components, chassis parts, wheels, wheel rims, crankcases, cylinder heads and screws; treatment of materials, namely, straightening, polishing, milling, turning, chrome-plating, powder coating and painting of ready-to-install components, in particular of metal; milling of wheel spiders; treatment of materials, namely, treatment of vehicle parts, in particular by the use of heat treatment and quenching of motor components, vehicle structural parts, chassis parts, wheels, crankcases, cylinder heads, screws; recycling of metals