What is the permeate flow rate?

The TW-1812-75 model has a permeate flow rate of 75 GPD (11.8 L/H) under standard test conditions.

ODM&OEM Domestic Water Purifier Reverse Osmosis Water Filter Membrane

Name: ODM&OEM Domestic Water Purifier Reverse Osmosis Water Filter Membrane
Brand: Chongqing Aotong Environmental Protection Technology Co., Ltd.
SKU: 2156639662

Chongqing, ChinaChongqing Aotong Environmental Protection Technology Co., Ltd.

US$2.30

100-499 Pieces

US$2.20

500-999 Pieces

US$2.10

1,000-9,999 Pieces

US$2.00

10,000+ Pieces

Sample price:US$2.30/piece.Request sample

Product profile

Customization

Available

Membrane Type

Spiral

Type

Model NO.

TW-1812-75

Model No.

Tw-1812-75

Application

Hotel, Commercial, Household

Color

Blue or Customized

Size

1.67*11.74 Inch

Keyword

Domestic RO Membrane

Flow Rate

75GDP 80gpd

Usage

RO Purifier

Material

Polyamides

Function

Reverse Osmosis Purifier Part

Water Temperature

25℃

Test Pressure Psi(Bar)

60 Psi (4.1 Bar)

Stable Salt Rejection Rate

98%

pH Value

7.5 to 8

Recovery Rate

35%

Influent Concentration

500 Ppm

Transport Package

25 Pieces/Carton

Specification

42.5*298 mm

Trademark

Walchin

Origin

Chongqing

HS Code

8421991000

Production Capacity

500000 Pieces/Year

Key features

High Salt Rejection: Achieves a stable salt rejection rate of 98% for superior water purification.

High Flow Rate: Delivers 75 GPD (11.8 L/H) permeate flow rate for efficient water production.

Low Pressure Operation: Designed for low-pressure operation, ensuring energy efficiency and high water output.

Customizable Color: Offers Blue or Customized color options to meet specific branding needs.

Universal Fit: Household series membrane elements are universal composite elements for home use.

Improved Water Taste: Features good desalination performance and improved water taste for consumers.

Effective Contaminant Removal: Excellent performance in removing dissolved salts such as TOC and SiO2.

Proven Manufacturer: Leading enterprise with 15 million sqm annual capacity and 7% R&D investment.

Company profile

Self-brandedR&D Capabilities

Chongqing Aotong Environmental Protection Technology Co., Ltd.

Chongqing, China

CertifiedBusiness Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedNearest Port: Shanghai PortAverage Response Time: ≤24h CertifiedTerms of Payment: LC, D/P, T/T, etc.

AI-Powered supplier vetting

SummaryThe supplier is identified as a trading company located in Chongqing, with four production lines and stated RO membrane sheet output of 15,000,000 square meters. It supports sample-based, design-based, minor, and full customization and offers ODM services. Export sales account for 31%–40% of total sales, with export terms including FOB, CIF, CFR, and EXW. However, evidence shows weaknesses in documented service execution: procedures for supplier assessment, corrective actions, and complaint handling exist without written records. The supplier has no overseas warehouse, showroom, agent or branch, or offline trade-show participation. Innovation evidence is limited because no new products were reported in the past year and no SDK is available. Quality-control staffing and staff experience are either unavailable or reported as zero. Financial information provided for recent periods consists of zero values, making financial credibility difficult to establish.

Supplier typeThe supplier is explicitly classified as a trading company, located in Chongqing’s Kaizhou District, and associated with the scientific research and technical services industry. This establishes its registered business type but does not by itself confirm whether it owns or directly operates manufacturing facilities.

After-Sales capabilityThe supplier has procedures for service assessment, corrective and preventive actions, and complaint handling, but no written records are maintained for these processes. It has no overseas warehouse, showroom, overseas agent or branch, and offers services in zero overseas countries, limiting demonstrated international after-sales infrastructure.

Financial creditThe supplied financial records report zero operating revenue, operating cost, gross profit, operating profit, gross margin, and current ratio for the stated recent periods. These figures provide no positive evidence of operating financial strength and create a material basis for concern about financial credibility.

R&D capabilityThe supplier offers ODM services and customization through samples and designs, but reports no new products during the past year, no available SDK, and only one year of total R&D engineer experience. This indicates some design-related capability but limited demonstrated recent innovation.

Production capacityThe supplier reports four production lines and annual RO membrane sheet output of 15,000,000 square meters, with off-season lead time within 15 working days and peak-season fulfillment of one month. However, it does not conduct continuous quantity reconciliation for every batch or mass production, and quality-control staffing is unavailable, creating a production-control weakness.

Customization capabilityThe supplier explicitly supports customization from samples, full customization, customization from designs, and minor customization, and also provides ODM services. These stated capabilities directly support a broad range of customer-specific product development requirements.

Product Q&A

Q:What type of RO membranes are available?

Aotun offers Household, Commercial, and Industrial RO membranes for optional selection.

Q:What is the salt rejection ratio of this membrane?

The TW-1812-75 model features a stable salt rejection rate of 98%.

Q:How often should RO membranes be replaced?

RO membranes typically last 2-3 years, depending on water quality and maintenance. Regular cleaning extends life.

Q:Is higher salt rejection always better?

It depends on feed water quality. For good water, 90% is workable; for brackish water, >95% is ideal. Any membrane meeting local drinking water standards is suitable.

Q:How do you guarantee product quality?

We provide a pre-production sample before mass production and conduct final inspection before shipment.