Purchase and sale of precious materials and valuables, in particular antiques, jewelry and fur fashion. Provision of services such as valuations. Purchase and sale of tool articles and steel goods; trade in goods of all kinds; building cleaning, roof cleaning, stone cleaning, roof coating, monument preservation, paving works, building renovations, base works, sealing works, drying, grouting, chimney renovations, carpentry, roofing, facade cleaning, facade painting and plastering.