our installation services   air duct systems: we design and install large-scale air duct systems for factory air conditioning, air cooler units, and hot air exhaust.

ventilation systems ventilation air conditioning system (ahu) exhaust air duct fresh air duct air supply air duct supply air duct piping system such as cold water pipes, chillers, chillers, chillers, chillers, air pollution system controls pollution, smoke, vapor, acid, chemical, wet scrubber