楼宇的一般内部清洁

This class includes: - general (non-specialized) cleaning of all types of buildings, such as: * offices * houses or apartments * factories * shops * institutions - general (non-specialized) cleaning of other business and professional premises and multiunit residential buildings These activities cover mostly interior cleaning although they may include the cleaning of associated exterior areas such as windows or passageways.

This class excludes: - specialized interior cleaning activities, such as chimney cleaning, cleaning of fireplaces, stoves, furnaces, incinerators, boilers, ventilation ducts, exhaust units, see 8129