Under-Sink RO Water Purifiers

Under-sink reverse osmosis water purifiers for kitchen cabinet installation, available from compact 100G systems to high-flow tankless models. Suitable for homes, apartments, offices and OEM/ODM projects.

How B2B Buyers Compare Under-Sink RO Systems

Shortlist models using verified installation, capacity and maintenance requirements rather than model appearance alone.

Tank or tankless

Confirm available cabinet space, peak demand and preferred dispensing response.

Rated capacity

Compare GPD and flow only under the stated inlet-water, pressure and temperature conditions.

Filter configuration

Check cartridge format, replacement supply and maintenance requirements for the destination market.

100G–1000G Compact Under-Sink RO Water Purifier

Compact under-sink reverse osmosis water purifier available in 100G, 400G, 600G, 800G and 1000G capacities, with stable flow rates from 0.26 to 2.6 L/min for different household water needs.

100G–800G Smart RO Water Purifier with Color Display & TDS Monitoring

Smart under-sink RO water purifier available in 100G, 400G, 600G and 800G capacities. Features a large color display with TDS monitoring and filter replacement reminder, automatic flushing, high-flow RO filtration and a 304 stainless steel faucet.

100G–800G Smart Under-Sink RO Water Purifier

Smart under-sink RO water purifier available in 100G, 400G, 600G and 800G capacities. Designed for efficient household drinking water purification with multiple flow options, convenient filter maintenance and OEM & ODM customization.

100G–800G Minimalist Under-Sink RO Water Purifier

Minimalist under-sink RO water purifier available in 100G, 400G, 600G and 800G capacities. Features high-flow RO filtration, smart faucet compatibility, 304 food-grade stainless steel faucet and space-saving tankless design for 400G–800G versions.

100G–800G Smart Under-Sink RO Water Purifier with Color TDS Display

Smart under-sink reverse osmosis water purifier in 100G, 400G, 600G and 800G capacities, featuring a color TDS display, filter-life reminder, automatic flushing and up to 2.1 L/min flow.

100G–800G Multi-Flow Under-Sink RO Water Purifier

Versatile under-sink reverse osmosis water purifier with 100G, 400G, 600G and 800G capacity options, stable flow from 0.26 to 2.1 L/min and compact white or gray housing.

100G–600G Smart Four-Cartridge RO Water Purifier

Self-priming four-cartridge RO purifier with 100G tank-supported and 600G high-flow tankless options, smart display and easy front-access maintenance.

800G Smart High-Flow Tankless RO Water Purifier

Slim 800G tankless RO water purifier with 2.1 L/min flow, color TDS display, automatic flushing, pure-copper booster pump and five-year pump warranty.

800G Smart Tankless RO Water Purifier with Advanced Display

800G tankless under-sink RO purifier with 2.1 L/min output, advanced color status display, automatic flushing and a low-noise pure-copper booster pump.

600G–800G Compact High-Flow Tankless RO Water Purifier

Compact 600G–800G tankless RO purifier with 1.57–2.1 L/min output, color status display, advanced filtration and a 165 mm slim under-sink body.

100G–800G Smart Four-Cartridge RO Water Purifier Series

Smart four-cartridge RO purifier series with 100G, 600G and 800G options, color TDS and filter-life display, built-in booster pump and stable output.

1000G Under-Sink RO Water Purifier

1000G under-sink RO water purifier with a high-performance reverse osmosis membrane, 6-chamber low-noise pump and smart faucet options for high-flow household water purification.