NIC 432201 का अर्थ Installation, repair and maintenance of plumbing for water, gas, and sanitation equipment (excluding hospitals gas fittings) है. यह six-digit Sub-class वह practical final layer है जिसकी सबसे अधिक...
This class includes the installation, repair and maintenance of plumbing, heating and air-conditioning systems, including additions and alterations. This class excludes: - installation of electric baseboard heating, see 4321 - camera inspections in air ducts, water and gas pipes, and other liquids without repair or installation, see 7120
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