Official classification context
Industry overview This refers to the establishments engaged in support operations of transportation, cleaning, repair/maintenance, preservation, to other establishments belonging to the same enterprise to primarily promote activities in the equipment installation work.
Major group context This Major group comprises establishments primarily engaged in direct contracts with the orderers for completing electric structures, telecommunication signal facilities, air -conditioning equipment, water supply -drainage with sanitary equipment, elevator systems, and other machinery and equipment, or the establishments engaged in comple ting similar work by self -construction (construction for the establishment itself) as well as those engaged in subcontracting installation work as a part of work for these machinery and equipment.