7
Pumps, pipes, containers and controllers for irrigation, spraying and bottling; reactors, mixers, decanters and filters for physico-chemical or biological treatment of water and aqueous solutions; centrifuges, filterpress and dewatering grids for liquid, semi-liquid and solid sludge treatment; static and dynamic mixers, hydro-ejectors, centrifugal and volumetric pumps, mechanical distributors, dilutors, stirrers, agitators, diaphragms and Venturi tubes
9
Metering units for dosing chemical products and physico-chemical or biological reagents; hardware equipment for the control and automation of purification treatments of water and liquids; computer software for monitoring and controlling water treatments
11
Environmental cleaning units in the field of water treatment, namely, purifiers, settlers, flotators, granular, textile and membrane filters, softeners, deionizers, evaporators, heat exchangers, aerators, sterilizators, radiation generators, and spray generators; permeable and semi-permeable membranes for ultrafiltration, nanofiltration, hyperfiltration, or reverse osmosis
42
Engineering services, namely conducting studies, pilot tests and defining operating conditions of water treatment processes for drinking water, wastewater, industrial water and fluids and sludges or solid waste produced by said processes