Installation in buildings or in other projects of building of: pumbling systems and hygiene appliances, pipes for gas and water (except for heating), setting of automatic extinguishers, etc.
Installation in buildings or in other projects of building of: heating, cooling and ventilation systems (except heating)
Installation of heating, air-conditioning and ventilation
Engineers and similar technical advisors, with the exception of surveyors
Laying of floors and fitting wooden wall-coverings
Do-it-yourself businesses and d.i.y. shops of common building materials
Assembling of inside and outside metallic woordworks: doors, windows, frames for windows and doors, stairs, closets for equipped kitchens, shop equipments, etc.
Assembling of movable partitions, recoverings for walls, ceilings, etc., in metal
Assembling of garage doors, blinds, louvers, grids, etc. in metal
Assembling of metal covered doors and metallic fire doors
Assembling of metallic greenhouses, verandas, etc.
Assembling of partitions in gypsum
Paint of metallic works
Paint of ships and boats by non-specialized units
Setting of screeds
Building of coolers, vaults, etc.
Wholesale trade of bathroom facilities: baths, sinks, wcs, etc.