Metered Chemical Feed Units and Automatic Controlled Water Softening Units
Electrical and Scientific ApparatusWater Treatment Apparatus Specifically, Manual Filters, Automatic Filters, Water Sterilizer Units, Pressure Regulating Tanks, Reverse Osmosis Units, Distillation Units, and Water Softening Units
Environmental Control ApparatusInstallation, Maintenance and Repair of Water Treatment Apparatus, Diagnostic Services for Water Supply Systems, and Plumbing Services
Building Construction and Repair