11 Water treatment equipment, namely, membrane treatment systems comprised of polystyrene resins, fiberglass reinforced tanks, air actuated valves, Programmable Logic Controllers (PLC) controls, Human Machine Interfaces (HMIs), Fiberglass Reinforced Plastics (FRP) vessels, polyamide thin film composite membranes, spiral wound membranes, hollow fiber membranes, tubular membranes, high pressure multistage pumps, pressure transducers, conductivity controllers, pH controllers, liquid filled gauges, solenoid valves, re-pressurization pumps, air diaphragm pumps, fixed orifice flow controllers, expansion joints, sponge balls, clean-in-place systems, mag meters, poly tubing, cartridge filters, bag filters, granular activated carbon, filter housings, oil-water separators, blowers, and jet pumps all sold as a unit; water filters; filter cartridges; portable membrane treatment systems comprised of polystyrene resins, fiberglass reinforced tanks, air actuated valves, Programmable Logic Controllers (PLC) controls, Human Machine Interfaces (HMIs), Fiberglass Reinforced Plastics (FRP) vessels, polyamide thin film composite membranes, spiral wound membranes, hollow fiber membranes, tubular membranes, high pressure multistage pumps, pressure transducers, conductivity controllers, pH controllers, liquid filled gauges, solenoid valves, re-pressurization pumps, air diaphragm pumps, fixed orifice flow controllers, expansion joints, sponge balls, clean-in-place systems, mag meters, poly tubing, cartridge filters, bag filters, granular activated carbon, filter housings, oil-water separators, blowers, and jet pumps all sold as a unit