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Leading Membrane Element Manufacturer in China

Professional, experienced, and innovative manufacturer of TFC membranes, RO water purifiers, and custom membrane solutions for industrial and residential applications.

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30,000+
㎡ Factory Area
20+ million
㎡ Annual Capacity
100+
Experienced Employees

Our Products

High-performance membrane elements and water purification systems engineered for reliability, efficiency, and scalability across diverse industries.

TFC Membrane

TFC Membrane

  • LM-LP-31-FL1: Low Pressure TFC
  • LM-BW-FL1: Brackish Water TFC
  • LM-XULP-R-FL1: Ultra Low Pressure (Residential)
  • LM-SW-FL1: Sea Water TFC
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Membrane Element

Membrane Element

  • LM4040-GSV12-FL1: Gas Separation
  • LM8040-GSV12-FL1: Gas Separation
  • LM-3113-1200G-FL1: Domestic RO (1200GPD)
  • LM-3213-800G-FL1: Domestic RO (800GPD)
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RO Water Purifier

RO Water Purifier

  • LM-WP-US: Under Sink RO System
  • LM-WP-FS: Floor Standing RO System
  • High efficiency, compact design
  • Smart filtration monitoring
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PP Cotton Filter

PP Cotton Filter

  • LM-PP: High-density polypropylene
  • Effective sediment pre-filtration
  • 5-micron filtration standard
  • Compatible with all RO systems
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OEM/ODM Solutions

OEM/ODM Services

  • Tailored membrane design
  • Custom labeling & packaging
  • Private branding available
  • End-to-end manufacturing support
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Industrial Membrane Film

  • High flux & rejection rates
  • Chemical & temperature resistant
  • Long operational lifespan
  • ISO-certified quality control
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Domestic RO Membrane Film

  • Safe for drinking water
  • Low energy consumption
  • Easy installation
  • NSF-compliant materials
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Gas Separation Membrane

  • Hydrogen, nitrogen, oxygen separation
  • High selectivity & permeability
  • Used in petrochemical & energy sectors
  • Customizable configurations
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Why Choose LONGMEM?

As a top 3 membrane manufacturer in China, we combine cutting-edge R&D, large-scale production, and global compliance to deliver unmatched value.

  • Large Scale Facility

    30,000+㎡ factory with 20+ million ㎡ annual membrane production capacity.

  • Excellent R&D Team

    Innovative solutions tailored to diverse industrial and residential needs.

  • OEM/ODM Services

    Custom design, branding, and packaging for global partners.

  • Global Compliance

    Products meet international standards including NSF, ISO, and CE.

Factory Interior

Membrane Element Applications

Our membranes are trusted across industries for reliable, efficient, and sustainable water and gas separation.

Desalination Plants

High-efficiency seawater desalination with durable sea water TFC membranes.

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Industrial Processes

Precision filtration for chemical, pharmaceutical, and manufacturing sectors.

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Municipal Water Treatment

Safe, scalable solutions for city-wide clean water supply systems.

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Food & Beverage Industry

Ensure purity in beverages, dairy, and food processing with NSF-compliant membranes.

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Agriculture And Irrigation

Efficient water reuse and drip irrigation with low-fouling membrane technology.

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Wastewater Treatment & Recycle

Advanced membranes for industrial and municipal wastewater reclamation.

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LONGMEM Factory

About LONGMEM

Jiangsu Longmem Technology Co., Ltd. is a technological innovation enterprise specializing in water treatment membranes, new energy membranes, and biotechnology membranes. Established in April 2018 and located in Changzhou, Jiangsu Province — near Shanghai and Nanjing — we serve over 1000 global partners.

With over 100 experienced employees, cutting-edge technologies, and a 30,000㎡ manufacturing facility, we rank among the top 3 membrane manufacturers in China.

Company Profile Download Catalogue

Frequently Asked Questions

What types of membranes does LONGMEM manufacture?

We produce TFC membranes (low pressure, brackish water, sea water), membrane elements for residential and industrial use, gas separation membranes, and OEM/ODM solutions.

Can LONGMEM provide custom membrane solutions?

Yes, we offer full OEM/ODM services including custom design, branding, packaging, and technical support.

Where is LONGMEM located?

Our headquarters and manufacturing facility are in Changzhou, Jiangsu Province, China — strategically located near Shanghai and Nanjing.

Are your products certified?

Yes, our membranes meet international standards including ISO, NSF, and CE for safety and performance.

What is your annual production capacity?

We produce over 20 million square meters of membrane annually, with a 30,000㎡ state-of-the-art facility.

Get in Touch

Reach out for quotes, technical support, or partnership opportunities.

[email protected]
+86 13706125523
WeChat: yatsen
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