... valve.HVAC and fire works.3.Water equipment,auto-control watersystem,industrial mini-auto equipment, Small equipment for automatic control4.Irrigation ... humidifier.6.Solar thermal,under-floor,rain water,irrigation,plumbing service,hot water heating and solar glycol ... ,ideal for off-grid system. Domestic/potable water,Irrigation system,cooling/heating system,Low voltage plumbing system7.Multiple ...