floor and wall coverings, electrical installation works, repair services of electrical installations, plumbing and air conditioning heating and cooling installations, thermal insulation works of external wall surfaces, mortar coatings, painting works, roof construction works, wholesale trade of timber, building materials and sanitary ware, retail sale of hardware, paints and glass in specialized stores, electrical design services buildings, stereo rental services, landscaping and garden care services (gardener services), entertainment event planning services (e.g. weddings and the like), construction of doors, windows and their frames, as well as doorstep thresholds, of metal, event music services, jockey disk services (d.j.)