A quotation for an RO main unit is not necessarily a quotation for a complete factory water installation. Start with the water your process needs, then compare the equipment list and the responsibilities at each connection point.
Prepare a short project brief
- Project country and city, production application and expected procurement timing
- Water source and any available laboratory analysis, with sampling date, location and units
- Required water quality at the final production use point
- Daily consumption, peak demand and planned operating hours
- Available voltage, phase and frequency, inlet conditions and installation space
- Existing treatment, storage tanks and distribution equipment
If information is missing, identify the gaps and send what you already know. Keep the original water report separate from the final-water specification. A single TDS reading does not describe the full source-water condition.
Use the RO water-analysis report checklist and project brief to label each sample, retain the report units and separate source-water results from production-water requirements.
Compare the standard supply scope
Qingze’s standard RO range includes nominal capacities of 250, 500 and 1,000 litres per hour. Nominal output is a selection reference: actual production depends on feedwater, operating conditions and the time available for operation and maintenance.
| Model | Standard supply | Outside the standard supply |
|---|---|---|
| QZ-RO250 / QZ-RO500 | Pretreatment and RO main unit | Raw-water pump, water tanks and distribution pump |
| QZ-RO1000 | Raw-water pump, pretreatment and RO main unit | Water tanks and distribution equipment |
RO250 and RO500 use a direct mains-water connection, subject to review of feedwater quality, pressure and site interfaces. A well, storage tank or other source may require a different arrangement.
For model details, review the RO500 specifications and RO1000 specifications. Both pages include an English selection sheet for your team.
Put the complete installation boundary in writing
- Pretreatment: identify the treatment units and any additional protection required for your source water.
- RO equipment: confirm the membrane and pump configuration, controls and monitoring.
- Storage and distribution: identify the tanks, pumps, pipework and pressure required at the use points.
- Site interfaces: state who prepares incoming water, electrical supply, drainage and product-water connections.
- Delivery and support: identify packaging, destination, installation responsibilities, operating guidance and any agreed site service.
- Operation: confirm consumables, maintenance information, commissioning requirements and the acceptance method.
Check each item against the written supply list. A model name or an hourly production figure alone does not establish that the entire installation is included.
A short format for comparing industrial RO quotations
Ask each supplier to reply using the same headings. If a point depends on a water test or a site check, ask them to mark it as pending.
For a Chinese-language comparison table, see RO 设备报价范围对比表.
- System and rated output: [model or process, product-water flow, feed-water conditions]
- Included equipment: [pretreatment, RO, controls, storage and distribution as applicable]
- Site responsibilities: [water and power connections, installation and commissioning]
- Acceptance: [what will be measured, at which point and under which operating conditions]
- Delivery and open items: [delivery terms and timing, exclusions and items to confirm]
When does the project need a custom review?
To compare the treatment routes before defining the supply scope, read our single-pass RO, two-pass RO and RO + EDI selection guide, with three actual factory projects.
Describe difficult or variable source water, a defined high-purity requirement, several production lines, existing-system problems or limited water supply before selecting a standard unit. These conditions can affect pretreatment, the treatment route, storage and distribution.
For two-pass RO, the first-pass permeate feeds the second pass. In Qingze’s Senegal beverage project, the recorded flows were 9 m³/h and 6 m³/h in sequence; they did not represent 15 m³/h of final water. A separate concentrate-recovery unit returned recovered permeate to the raw-water tank for mixing and retreatment.
The project’s arrangement is an example, not a standard recovery guarantee. A different water source or production use needs its own review.
Send the requirements for your factory
QINGZE SYSTEMS supplies standard RO equipment and custom water-treatment systems from Dongguan, China. Communication is available in English and Chinese.
Send a custom industrial RO enquiry · Request an RO500 configuration · Request an RO1000 configuration
Share only information relevant to the project. The linked enquiry pages provide the privacy information for submitting your details.
Include acceptance in the agreed scope
Review how flow, water quality, equipment records and site responsibilities will be checked before confirming delivery.