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18 years of experience as a source manufacturer of water treatment equipment, supporting ODM/OEM.

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Shandong Qingqingquan Environmental Protection Technology Co., Ltd. is a professional water treatment equipment manufacturer integrating R&D, production, and sales, focusing on providing water treatment equipment for residential, commercial, and industrial applications to global customers.
1 T/H Fully Enclosed Water Purification System All-in-One Cabinet-Type Pre-Treatment & Reverse Osmosis Solution
This fully enclosed, cabinet-type water treatment system is engineered for a rated permeate flow of 1 m³/h (1,000 L/h), built for scheduled and non-continuous operation. Housed in a 304 stainless steel cabinet with lockable doors and mobile casters, the unit integrates pre-treatment and reverse osmosis (RO) into a single, compact footprint.

The standard 4-stage configuration combines quartz sand filtration, activated carbon adsorption, PP cartridge filtration, and RO. A simplified 2-stage configuration (PP cartridge + RO) is available for good-quality municipal feed water, while pre-treatment can be further customized for challenging source water.

An integrated pressure tank stabilizes system pressure and delivers purified water on demand, while the intelligent RO controller with digital display, pressure gauges, and rotameters provides real-time monitoring and fully automated operation. The enclosed design protects all internal components from dust, moisture, and unauthorized access, making it suitable for installation in public areas, kitchens, and production floors.

Perfect for facilities with fixed daily operating hours—such as cafes, restaurants, schools, small workshops, laboratories, and boiler feed systems—the system ensures reliable, high-quality water whenever it is needed.
0.5 T/H 4-Stage Reverse Osmosis Water Purification System Compact Skid-Mounted Filtration & RO Treatment Solution
This compact, skid-mounted water treatment system is engineered for a rated permeate flow of 0.5 m³/h (500 L/h). It integrates four core treatment stages—quartz sand filtration, activated carbon adsorption, precision cartridge filtration, and reverse osmosis (RO)—into a single mobile frame. An optional antiscalant dosing system can be added to protect the RO membranes against mineral scaling, making the system versatile for municipal tap water, groundwater, and lightly brackish water sources.

Ideal for small commercial, light industrial, laboratory, and drinking-water applications, the system delivers consistent high-purity water with fully automated operation and minimal operator attention.
2 m³/h Two-Stage RO + EDI Ultra-Pure Water System All-Stainless Steel Industrial Water Purification Equipment
This is a high-efficiency 2 m³/h two-stage reverse osmosis (RO) + EDI ultra-pure water system, designed for applications requiring extremely high water purity. It combines multi-media pre-treatment, two-pass RO purification, and continuous electrodeionization (EDI) into a fully integrated, all-stainless steel skid.

Built for demanding industries such as pharmaceuticals, laboratories, cosmetics, and electronics manufacturing, the system produces ultra-pure water that meets stringent quality standards. The 304 stainless steel construction ensures hygiene, durability, and easy cleaning, making it ideal for environments with strict sanitation requirements.
500 L/h Two-Stage RO + EDI Deionized Water System
This compact skid-mounted ultrapure water system has a rated flow rate of 0.5 m³/h (500 L/h). It employs an all-membrane process combining pretreatment + two-stage reverse osmosis (RO) + continuous electrodeionization (EDI), consistently producing ultrapure water with a resistivity of up to 15–18.2 MΩ·cm.

Designed specifically for timed or non-continuous operation, the system features a high level of integration and a small footprint, making it ideal for industries with stringent water quality requirements such as electronics & semiconductors, photovoltaics, pharmaceuticals, laboratories, fine chemicals, and surface treatment.
500LPH Compact Two-Stage RO Filtration System
This compact skid-mounted PP + RO water treatment system has a rated capacity of 0.5m³/h (500 L/h), designed for intermittent and scheduled operation. It adopts a two-stage purification process: PP security filtration followed by reverse osmosis (RO). The simplified structure is built for users with relatively good raw water quality, to produce stable high-purity water for small commercial, light industrial and laboratory applications.
It is well suited for sites with fixed daily operating hours, such as cafes, small workshops, schools and boiler feed water systems, supplying purified water on demand.
Skid-mounted 3-Stage Water Pretreatment Softening System
This compact, skid-mounted three-stage water softening & pre-treatment system is built for reliable continuous or scheduled operation. It integrates three independent filter tanks on one common skid: quartz sand filter, activated carbon filter, ion exchange softener. This all-in-one pre-treatment unit effectively removes sediment, rust, chlorine, organics and water hardness, protecting downstream RO, boilers, heat exchangers and pipelines from scaling and fouling.


It is widely used as pre-treatment for reverse osmosis systems, boiler feed water, circulating water, hotel & domestic water, food processing, light industry and commercial water supply projects. Flow rate and tank material are fully customizable to match your raw water conditions and project capacity requirements.
Medium-sized industrial water treatment equipment
This industrial-grade reverse osmosis (RO) system is designed for 2–3 m³/h continuous permeate flow, built for commercial and light industrial facilities requiring reliable, high-volume purified water.

The system features a full pre-treatment chain (multi-media sand filtration + activated carbon filtration), a dedicated chemical dosing system, a precision security filter, and a high-efficiency RO unit. It effectively removes sediment, chlorine, organic contaminants, scaling ions, and dissolved salts, delivering consistent, high-quality water for manufacturing, food & beverage, boiler feed, and general process applications.

Designed for intermittent on-demand operation instead of 24-hour continuous running, it supports flexible start and stop to save energy and reduce equipment wear, perfectly matching places with fixed working hours water demand.
Skid-mounted 3-Stage Water Pretreatment Softening System
This compact, skid-mounted three-stage water softening & pre-treatment system is built for reliable continuous or scheduled operation. It integrates three independent filter tanks on one common skid: quartz sand filter, activated carbon filter, ion exchange softener. This all-in-one pre-treatment unit effectively removes sediment, rust, chlorine, organics and water hardness, protecting downstream RO, boilers, heat exchangers and pipelines from scaling and fouling.

It is widely used as pre-treatment for reverse osmosis systems, boiler feed water, circulating water, hotel & domestic water, food processing, light industry and commercial water supply projects. Flow rate and tank material are fully customizable to match your raw water conditions and project capacity requirements.
500 L/h Two-Stage RO + EDI Deionized Water System
This compact skid-mounted ultrapure water system has a rated flow rate of 0.5 m³/h (500 L/h). It employs an all-membrane process combining pretreatment + two-stage reverse osmosis (RO) + continuous electrodeionization (EDI), consistently producing ultrapure water with a resistivity of up to 15–18.2 MΩ·cm.

Designed specifically for timed or non-continuous operation, the system features a high level of integration and a small footprint, making it ideal for industries with stringent water quality requirements such as electronics & semiconductors, photovoltaics, pharmaceuticals, laboratories, fine chemicals, and surface treatment.
Services

OEM & ODM Services for Water Treatment Equipment

As a professional light-custom water treatment equipment manufacturer, we provide one-stop OEM & ODM solutions tailored to your brand, market, and application needs. Whether you’re a distributor, brand owner, or project contractor, we help you bring your custom water treatment systems to market with efficiency, quality, and reliability.
1
Customized Flow Rate & System Configuration
1.Flow rates from 0.25 m³/h to 100+ m³/h
2.Process combinations: single/double-pass RO, pre-treatment, EDI, UF, and more
3.Feed water adaptation: tap water, well water, brackish water, and seawater
4.Application-specific design: drinking water, industrial process, boiler feed, laboratory, and pharmaceuticals
2
Branding & Private Labeling
1.Custom logo printing on control panels, tanks, and frames
2.Custom color schemes and machine housings
3.Private-label packaging with your brand design
4.Custom user manuals, marketing materials, and product documentation
3
Mechanical & Structural Customization
1.Skid size and layout adjustment for compact or large-scale facilities
2.Material selection: FRP vs. stainless steel tanks, 304 vs. 316L piping
3. Mounting options: wall-mounted, floor-standing, or containerized solutions
4. Custom pressure vessels, piping layouts, and valve configurations
4
Electrical & Control System Customization
1.Voltage and frequency adaptation (110V/220V/380V, 50Hz/60Hz)
2.Localization of control panels (language, units, safety standards)
3.PLC/HMI integration with custom monitoring and alarm functions
4.Remote monitoring and IoT connectivity options (on request)
Services
OEM & ODM Services for Water Treatment Equipment
As a professional light-custom water treatment equipment manufacturer, we provide one-stop OEM & ODM solutions tailored to your brand, market, and application needs. Whether you’re a distributor, brand owner, or project contractor, we help you bring your custom water treatment systems to market with efficiency, quality, and reliability.
  Customized Flow Rate & System Configuration
  Branding & Private Labeling
  Mechanical & Structural Customization
  Electrical & Control System Customization
  Compliance & Certification Support
Our Advantages  

Why choose QingQingQuan

?
Based on advanced water treatment technology, we provide safe, efficient, energy-saving, and environmentally friendly water treatment solutions to customers worldwide, enabling more people to enjoy healthy and clean water resources.

About QingQingQuan

18 years of experience as a source manufacturer of water treatment equipment
Shandong Qingqingquan Environmental Protection Technology Co., Ltd. is a professional water treatment equipment manufacturer integrating R&D, production, and sales, focusing on providing water treatment equipment for residential, commercial, and industrial applications to global customers.

Located in Linyi City, Shandong Province, the company enjoys convenient transportation and possesses a complete production system and a professional technical team. For many years, the company has adhered to the business philosophy of "quality first, customer foremost," committed to providing customers with high-quality products and professional services.
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Located in Linyi City, Shandong Province, the company enjoys convenient transportation and possesses a complete production system and a professional technical team.
News  

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Whether you’re a distributor, brand owner, or project contractor, we help you bring your custom water treatment systems to market with efficiency, quality, and reliability.
Company News | Intelligentization and Sustainable Development Drive the Industrial Water Treatment Industry Towards a New Future
With the acceleration of global industrialization, increasing water resource pressure, and increasingly stringent environmental regulations, the industrial water treatment industry is ushering in a new round of technological upgrades. As a professional water treatment equipment manufacturer, we always pay attention to industry development trends and continuously provide global customers with efficient, energy-saving, and intelligent water treatment solutions.
2026 09 10
2026 Water Treatment Equipment Industry Development Trends: Intelligentization, Resource Utilization, and Green Low-Carbon Development Become the Main Themes
With the acceleration of global industrialization, the intensification of water scarcity, and increasingly stringent environmental regulations, the water treatment industry is ushering in a new round of technological upgrades. For manufacturing enterprises, industrial parks, data centers, and the food, beverage, and pharmaceutical industries, efficient, intelligent, and energy-saving water treatment equipment has become a key infrastructure for ensuring stable production and achieving sustainable development.
2026 09 20
Demand for Intelligent Water Treatment Equipment is Growing Rapidly
With the acceleration of industrial digital transformation, more and more customers are beginning to focus on intelligent control and remote monitoring functions. Modern water treatment systems have gradually achieved
2020 07 15
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Shandong Qingqingquan Environmental Protection Technology Co., Ltd. is a professional water treatment equipment manufacturer integrating R&D, production, and sales, focusing on providing water treatment equipment for residential, commercial, and industrial applications to global customers.
Contact Us
Contact person: wangqiwei
Tel: +86 152 6994 7255
WhatsApp: +86 152 6994 7255
Add: Room 2004, Building A12, Lushan Center, Liuqing Street, Lanshan District, Linyi City, Shandong Province, China
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