Under-Sink Reverse Osmosis (RO) Water Purifier

Model: C3-C1-600G — Smart Touch Panel | 4-Stage Precision Filtration | Universal Filter Cartridges | Side-Mounted Space-Saving Design

C3-C1-600G Under-Sink RO Water Purifier

1. Product Overview

The C3-C1-600G is a reverse osmosis (RO) water purifier developed by Qiteng Environmental for the international under-sink market, designed for household kitchens and small commercial settings. The unit adopts a slim, side-mounted body design just 154mm wide, allowing it to be installed directly inside an under-sink cabinet without taking up any additional countertop space. The product features a smart touch display that shows the real-time TDS value of the purified water as well as the remaining filter life, making operation intuitive and maintenance simple. Inside, a 4-stage precision filtration system (PP cotton, compressed activated carbon, RO membrane, and post-carbon) effectively removes sediment, rust, residual chlorine, odors, bacteria, heavy metals and other impurities, delivering fresh, great-tasting water that meets safety standards. In addition, the filter cartridge interface follows an industry-standard design, compatible with same-spec cartridges from mainstream brands, so end users are not locked into a single brand for replacement cartridges, lowering long-term cost of ownership. The product supports OEM/ODM customization, including customer branding, panel UI, packaging, and regional certification requirements, making it well suited for distributors, wholesalers, and brand owners expanding into overseas water purification markets.

2. Core Selling Points

2.1 Smart Touch Panel with Real-Time TDS Monitoring

The panel features a large smart touchscreen that automatically displays the purified water's TDS value upon startup, giving users a clear, direct view of water quality. Below the display, three progress indicators correspond to the PPC (PP cotton + compressed carbon), RO (reverse osmosis membrane), and T33 (post-carbon) filter stages. When an indicator drops to its last segment, the system automatically reminds the user to consider replacing that filter, preventing water quality issues caused by overdue filter changes. The panel also integrates four function-status icons — self-clean, purify, standby, and service — for simple one-touch operation with an at-a-glance status overview.

2.2 4-Stage Precision Filtration for Thorough Purification

The unit is equipped with a 4-stage precision filtration system that purifies water stage by stage, ensuring safe and fresh output:

• Stage 1 – PP Cotton (5-micron precision): captures sediment, rust, and other large suspended particles, protecting the downstream filters;
• Stage 2 – PRE Compressed Activated Carbon: efficiently absorbs residual chlorine and off-odors/colors, improving water taste and smell;
• Stage 3 – RO Membrane: with a pore size down to the 0.0001-micron level, this stage removes bacteria, viruses, heavy metal ions, and the vast majority of dissolved impurities, forming the core purification step;
• Stage 4 – Post-Carbon (taste-enhancing factor): conditions the purified water a second time, improving taste so the finished water is sweeter and more refreshing.

2.3 Slim Body, Side-Mounted to Save Cabinet Space

The unit's body is only 154mm thick and uses a side-mounted installation method, allowing it to be fitted directly into the side of an under-sink cabinet. This takes up no cabinet storage space on the front and does not interfere with everyday countertop use, making it ideal for kitchens with limited space in both home and commercial settings. The matching purified-water faucet is installed separately on the countertop, with the inlet, wastewater, and purified water lines clearly separated for easy installation and maintenance.

3. Product Specifications

4. Installation & Usage Instructions

1. Installation location: Install inside the under-sink cabinet, reserving at least 154mm of side-mount space, and ensure adequate ventilation for easy routine maintenance;
2. Water inlet connection: Connect to the kitchen cold water angle valve; a tee valve is recommended for switching between raw tap water and purified water;
3. Outlet piping: Connect the purified water line to the countertop purified-water faucet, and route the wastewater line separately into the drain to avoid cross-contamination;
4. Power requirements: Rated at 220V/50Hz; use of a dedicated, properly grounded outlet is recommended;
5. First use: After powering on, flush the system for approximately 30 minutes before drinking the water;
6. Routine maintenance: Regularly check the TDS reading and filter-life indicators on the panel, and replace filters promptly as prompted to keep water quality consistently up to standard.

5. OEM/ODM Customization Services

Since its founding in 2009, Qiteng Environmental has focused on OEM/ODM manufacturing of water purification equipment, offering international clients the following customization services:

• Brand customization: customer-specific logo, panel UI, and exterior color/finish customization;
• Packaging customization: outer cartons, manuals, certificates and other packaging materials customized to the client's brand identity;
• Certification support: assistance with CE, CB, SASO, BIS and other relevant certifications depending on the client's target export market;
• Specification customization: filter configuration, flow rate, and external dimensions can be adjusted according to the client's market requirements;
• MOQ and lead time: please confirm the latest MOQ and delivery schedule with your sales representative based on your specific order requirements.

6. Packaging & Carton Loading Information

Contact Us

Huizhou Qiteng Environmental Technology Co., Ltd.
Address: Huiyang District, Huizhou City, Guangdong Province, China
Contact: Willow Yang
Tel / WhatsApp: +86 189 4835 3117
Email: [email protected]
Website: www.qitengoem.com

Supporting OEM/ODM Customized Production — International Inquiries Welcome