design and installation of petroleum pipeline and lpg station gas pipelines install a cold water pipe system for chillers cooling tower steel pipe work for the whole system installation of air duct pipe work, cold air delivery pipe, duct work, ventilation pipe, air intake pipe, industrial air pipe

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