What is the pH range for operation?

Most of our membranes, including brackish and seawater desalination types, operate within a pH range of 2-11.

Do you offer OEM or ODM services?

Yes, we offer OEM and ODM services. Customization options include customization from samples, designs, full customization, flexible customization, and minor customization.

4021 RO Membrane Replacement Industrial Water Treatment Filter Membrane

Name: 4021 RO Membrane Replacement Industrial Water Treatment Filter Membrane
Brand: NINGBO RXHL TECHNOLOGY CO., LTD
SKU: 2221299525

Zhejiang, ChinaNINGBO RXHL TECHNOLOGY CO., LTD

US$26.00-30.00

100 piece

Sample price:US$30.00/piece.Request sample

Product profile

Customization

Available

Membrane Type

Spiral

Type

Model NO.

ULP-4021

Application

Industrial

Testing TDS

1500ppm Nacl

Testing Pressure

150psi

Permeate Flow

1000gpd (4.3m³/D)

Min.Rejection

98.5%

Stable Rejection

99%

Recovery

15%

pH_Range

2-11

Transport Package

Carton

Specification

0.55*0.21*0.22m

Trademark

RTL

Origin

China

HS Code

8421999090

Key features

High Desalination Efficiency: Stable rejection rate up to 99.85% for seawater and 99.70% for brackish water applications.

Wide pH Operating Range: Operates effectively within a pH range of 2-11, suitable for diverse water conditions.

Fouling Resistant Design: Specialized FR membranes offer enhanced resistance to fouling for longer service life.

Low Energy Consumption: LE and ULE series membranes reduce operating pressure requirements for energy savings.

Manufacturer Direct Supply: Direct from factory with 9-year industry background and independent R&D capabilities.

Quality Guarantee: Zero customer complaints policy with replacement guarantee and freight responsibility for quality issues.

Customization Options: Offers full customization, flexible customization, and minor customization based on samples or designs.

Comprehensive Product Range: Includes Brackish, Seawater, Low Energy, Fouling Resistant, and Nanofiltration membrane models.

Company profile

R&D CapabilitiesQuality AssuranceOEM ServicesFast Delivery

NINGBO RXHL TECHNOLOGY CO., LTD

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 7 Years CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤3.87h

AI-Powered supplier vetting

SummaryNingbo RXHLi Technology Co., Ltd. is presented as a water-treatment membrane manufacturer with UF and RO-related production lines, testing facilities, and 30 quality inspectors. It holds ISO9001:2015 and ISO14001:2015 certificates and reports written supplier-service procedures, corrective-action records, and finished-product inspection instructions. The supplier offers 3D design, sample/design-based customization, full customization, ODM, and OEM services, and reports new products within the past year. It has exported for seven years, with exports representing 11%–20% of total sales, but reports no overseas warehouses, showrooms, agents, or branches. The evidence does not establish financial credibility, named customer cases, or a complete after-sales service program. It also reports no SDK availability and no established AI model for data-driven management.

Supplier typeThe supplier is identified as Ningbo RXHLi Technology Co., Ltd. and describes itself as a water-treatment membrane manufacturing base with UF membrane and RO flat-sheet production lines, rolling equipment, water-testing equipment, and a laboratory. Its export activity includes agency and self-operated export channels and has continued for seven years, indicating a manufacturer with international trading capability.

CertificationsThe supplier reports holding ISO9001:2015 and ISO14001:2015 certificates. These explicitly demonstrate quality-management and environmental-management system certification.

R&D capabilityThe supplier reports 3D software design services, new products within the past year, ODM capability, and broad customization support. However, it reports no available SDK and no established AI model for big-data decision support, so innovation capability is demonstrated in product development and design but not across all stated technology dimensions.

Production capacityThe supplier reports six German-imported reverse-osmosis membrane production lines, UF and RO flat-sheet lines, domestic and industrial rolling machines, water-testing equipment, and a laboratory, supported by 30 quality inspectors and standardized finished-product inspection instructions. These details explicitly support substantial manufacturing and quality-control capability.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, flexible customization, and minor customization, together with 3D software design services. This indicates broad ability to support both design-led and sample-led customization.

Product Q&A

Q:Is your company a manufacturer or trading company?

We are a manufacturer with our own factory and cooperate with other factories using our technology. RTL has a 9-year background in the reverse osmosis membrane industry with independent R&D personnel and engineering, mastering core high salt water purification technology.

Q:What is your minimum order quantity (MOQ)?

The minimum order quantity varies by model. For household membranes, the minimum is 1000 pcs, and for industrial membranes, it is 100 pieces. OEM orders may have different requirements.

Q:What are the advantages of your products?

Our technical advantage lies in high desalination technology and a unique polyamide coating process. Household membranes can handle 3,000-6,000 ppm water quality, while seawater membranes handle 30,000-40,000 ppm, offering significant cost advantages.

Q:What is your guarantee for quality problems?

We maintain zero customer complaints. If a quality problem is verified through our reasonable process, we guarantee replacement and are responsible for the freight.

Q:What is the stable rejection rate of your membranes?

Stable rejection rates vary by model. For example, the SW-8040-400XLE has a stable rejection of 99.75%, while brackish water membranes typically offer 99.50% to 99.70% stable rejection.