RO Element Materials & Machinery Manufacturer
Production Equipment & Lines
Machines to Build, Finish & Test RO Elements
Rolling & winding machines — household and industrial, semi- and fully automatic.
Leaf prep — slitting, rewinding, cutting, folding and ultrasonic welding.
Finishing — trimming, central-tube taping, brine-seal assembly and FRP winding.
Testing & QC — vacuum leak and performance test machines.
Complete lines — fully automatic RO membrane element production lines.
Two Production Systems
Household & Industrial Rolling Systems
Complete machine sets for the scale you produce — from compact household lines to high-volume industrial 4040 / 8040 production.
Residential Rolling Systems
Compact machines and lines for 1812 & 2521 elements — up to fully automatic household production lines.
- Permeate carrier cutting & welding machine
- Membrane sheet slitting & rewinding machine
- Sheet cutting & folding / leaf making machine
- Household rolling & winding machine
- Trimming, vacuum testing & brine-seal assembly
- Central-tube & brine-seal tape winding machine
- Fully automatic household production line
Industrial Rolling Systems
High-volume 4040 & 8040 production — semi- and fully automatic, line-ready machines.
- Carrier trimming & ultrasonic welding machine
- Sheet & spacer cross-cutting & folding line
- Semi- & fully automatic industrial rolling machine
- Industrial element trimming machine
- Industrial vacuum / leak testing machine
- FRP fiberglass winding machine
- Fully automatic element production line
Key Machines
Core RO Membrane Production Machines
Household · 1812 / 2521
Membrane Sheet Cutting & Folding Machine
Siemens PLC + servo control, high automation, with installation, training and support.
RO Membrane Rolling Machine
A single-operator, servo-driven production cell for winding residential spiral-wound RO membrane elements.
RO Membrane Trimming Machine
RO Membrane Trimming Machine automatically trims both ends of a cured spiral-wound residential RO membrane element
RO Membrane Vacuum Testing Machine
PLC touchscreen control; one unit supports up to 6 rolling machines.
Industrial · 4040 / 8040
RO Membrane Sheet & Spacer Cutting Machine
Automates the most labour-intensive leaf-prep step, with installation, training and support.
Semi-Automatic RO Membrane Rolling Machine
An industrial RO membrane rolling machine for producing 2521, 4040 and 8040 spiral-wound elements at scale.
RO Membrane Trimming Machine
A heavy-duty industrial RO membrane trimming machine — trims both ends of cured 4040 and 8040 elements for clean.
Raw Materials & Components
All the Materials Inside an RO Element
Production-grade materials with stable specs, for 1812 through 8040 — supplied alongside your equipment so you can source everything in one place.
Reverse Osmosis Membrane Sheet
The active layer at the heart of every spiral-wound element — polyamide TFC RO membrane sheet in roll form for making 1812 to 8040 elements.
RO Membrane Bonding Tape
Self-bonding outer wrap that secures the spiral-wound membrane roll and gives a clean, branded finish.
RO Membrane ATD End Cap
Food-grade ABS anti-telescoping end cap that stops wound layers shifting under pressure, fixing and sealing the element ends.
Why WECOME
An Upstream Partner Built for Manufacturers
One-stop sourcing — every component and machine from a single partner.
Consistent quality — stable specs that protect your pass rate.
All sizes covered — 1812, 2521, 3013, 4040 and 8040.
Real engineering support — spec, layout, setup and training.
Worldwide shipping — export packing that arrives ready to run.
Who We Help
Built for RO Element Manufacturers
Whatever stage you are at, we supply the materials, machines and know-how to match.
Customer Feedback
Trusted by Element Manufacturers
What production teams say about working with WECOME.
Residential Water Treatment
“Consistent materials and fast replies. They helped us spec the full BOM for our 4040 line and the elements pass testing reliably.”
Martin Roberts
Industrial RO manufacturer
“Good engineering advice, not just sales. The layout and training support got us to stable output quickly.”
Sarah Johnson
Commercial Project
“One supplier for spacers, carriers, glue and the rolling machine made setting up our new line far simpler than we expected.”
Emily Blunt
Free Resource Center
Plan Your Line Before You Buy
40+ free calculators, selection guides, material data sheets and quality references — the same knowledge behind the products we supply.
APPLICATION SOLUTIONS
RO Membrane Applications
Drinking & Municipal Water
RO membrane materials and components for residential drinking water, municipal supply and community water treatment systems.
Commercial & Industrial Water
Reliable RO solutions for hotels, hospitals, factories and industrial process water systems with stable performance demands.
Brackish & Seawater Desalination
Materials and equipment support for brackish groundwater, coastal desalination and high-salinity RO treatment projects.
Ultrapure & Wastewater Reuse
Ready to source your RO element materials and machines?
Tell us your element sizes and output target — we’ll recommend the right components, equipment and complete line setup, and send you a quote.
Frequently Asked Questions
We supply the full range of RO element components: flat sheet (and low-pressure) membrane, feed spacer, permeate carrier, central tubes, brine seals, end caps and connectors, ATD caps, adhesive/glue, outer wrap tape, O-rings, membrane housings/pressure vessels and other replacement parts — for 1812, 2521, 3013, 4040 and 8040 sizes.
Yes. We export worldwide with proper packing and logistics, and we can supply components and tooling to your custom element specifications. Send us your element sizes and drawings and we will quote the full bill of materials.
Shanghai WECOME Environmental & Technology Co., Ltd is located in Shanghai, a professional membrane technology and materials supplier with production and sales together. We specialized in reverse osmosis membrane element solutions, including rolling machines and raw materials. We also have our own factory, which is based in 2011. All of our products comply with international quality standards and are greatly appreciated in a variety of different markets throughout the world.