31 companies in this supply chain, sorted by market share.
World's leading RO membrane manufacturer under the FilmTec® brand; acquired Filmtec Corporation (Minneapolis, MN) in 1985; the FilmTec FT30 membrane (1981 invention) enabled the modern spiral-wound RO industry; DuPont Water Solutions commands ~55-60% of global thin-film composite RO membrane market.
Supplies these inputs
Thin-film composite RO membranes (FilmTec polyamide)
Business segments
- RO/NF Membranes (FilmTec)55% rev
- Ultrafiltration (Hollow Fiber)20% rev
- Ion Exchange Resins15% rev
- Desalination & Water Systems10% rev
Olin Corporation ammunition division; operates East Alton IL (historic Winchester site) and Oxford MS factories; ~30% of US primer production through Winchester-branded primers; East Alton has produced primers since 1892; also makes lead styphnate in-house for Winchester ammunition
Supplies these inputs
Chlorine, sodium hypochlorite, and chloramine (disinfection chemicals)
Business segments
- Chlor-Alkali (Olin Chemicals — Largest Segment)52% rev
- Epoxy Resins (Also From Dow Acquisition)15% rev
- Winchester Ammunition (Consumer Brand)25% rev
- Chemical Distribution (Winchester-Olin-Dow Channels)8% rev
Leading global RO membrane maker; patented FilmTec TFC technology; services 10,000+ desalination/water reuse plants in 100+ countries
Supplies these inputs
PVDF and polysulfone hollow fiber ultrafiltration membranes · Ion exchange resins (cation and anion) · Thin-film composite RO membranes (FilmTec polyamide)
Replaceability
Substitutability 40% · 12 mo to replace
Business segments
- Reverse Osmosis Membranes (FilmTec)60% rev
- Ion Exchange Resins (Amberlite/Dowex)25% rev
- Ultrafiltration & Specialty Membranes15% rev
World's largest carbon-fiber maker (PAN-based); aerospace, sporting goods, wind, automotive.
Supplies these inputs
Thin-film composite RO membranes (FilmTec polyamide)
Business segments
- Carbon Fiber Composite Materials
- Fibers & Textiles
- Water Treatment / Membranes
- Films & Electronic / Functional Materials
Toray Industries, Inc. (Tokyo; TSE: 3402; ~¥2.6T revenue) is Japan's largest synthetic fiber manufacturer and a major producer of SMS (spunbond-meltblown-spunbond) nonwoven fabrics for medical and hygiene applications. Toray's nonwovens business (Fibers & Textiles segment) produces meltblown and spunmelt fabrics at facilities in Japan, South Korea, China, and Southeast Asia. Toray's Eclat SMS fabric — a tri-layer structure with meltblown as the filtration core — is used in surgical gowns, drapes, and masks. Toray supplies SMS nonwoven to Kimberly-Clark, Mölnlycke Health Care, and major Asian mask manufacturers. Toray is also a major producer of polypropylene resin (feedstock for meltblown) through its petrochemicals affiliates, giving partial upstream integration.
Supplies these inputs
PVDF and polysulfone hollow fiber ultrafiltration membranes · Thin-film composite RO membranes (FilmTec polyamide)
Replaceability
Substitutability 55% · 12 mo to replace
Business segments
- Fibers & Textiles35% rev
- Performance Chemicals20% rev
- Carbon Fiber Composites (TORAYCA)20% rev
- Environment & Engineering15% rev
Japan's leading battery separator film manufacturer (Hipore brand); ~25% global share. Only major wet-process separator plant in the Western Hemisphere (Concord, NC).
Supplies these inputs
PVDF and polysulfone hollow fiber ultrafiltration membranes
Replaceability
Substitutability 50% · 12 mo to replace
Business segments
- Battery Separator Film (Hipore — World Leader)20% rev
- Advanced Materials (Membranes + Polymers)25% rev
- Healthcare (Zoll Medical + Diagnostics)30% rev
- Homes & Construction (Hebel)25% rev
ZeeWeed PVDF hollow fiber MBR brand is the most-installed globally; Veolia acquired SUEZ water activities 2022; dominates municipal MBR market
Supplies these inputs
PVDF and polysulfone hollow fiber ultrafiltration membranes
Replaceability
Substitutability 40% · 18 mo to replace
Business segments
- MBR Systems (ZeeWeed PVDF Hollow Fiber)40% rev
- Water Treatment Technologies (Veolia VWT)35% rev
- Waste & Resource Recovery25% rev
American specialty chemicals company (NYSE: CBT, HQ Boston MA; ~$4B revenue); Cabot Norit activated carbon division is world's largest producer of activated carbon/activated charcoal for gas purification, water treatment, and pharmaceutical applications. In helium PSA (Pressure Swing Adsorption) purification plants, Cabot Norit activated charcoal beds at cryogenic temperatures adsorb trace impurities (neon, hydrocarbons, trace organics) from raw helium streams. Cabot Norit's activated carbon is simultaneously used in: helium plant gas purification, municipal water treatment (removing chlorine, THMs, and pharmaceuticals), air purification masks (same activated charcoal in military gas masks and HVAC filters), and pharmaceutical drug purification (decolorization of pharmaceutical intermediates). The same activated charcoal that cleans hospital water systems also purifies the helium that cools MRI superconducting magnets.
Supplies these inputs
Activated carbon (GAC and carbon block)
Replaceability
Substitutability 55% · 9 mo to replace
Business segments
- Reinforcement Materials (Carbon Black)52% rev
- Performance Chemicals (Fumed Silica & Specialty Carbons)28% rev
- Activated Carbon (Norit)20% rev
Japanese chemical firm; acquired Calgon Carbon (US) in 2018 for $1.1B; 20+ facilities across USA, Europe, Asia; specialty and commodity carbons
Supplies these inputs
Activated carbon (GAC and carbon block)
Replaceability
Substitutability 55% · 9 mo to replace
Business segments
- Activated Carbon (Calgon Carbon)30% rev
- Specialty Chemicals & Resins (Kuraray)35% rev
- Fibers & Textiles25% rev
- Medical & Life Sciences10% rev
South Korean chemical conglomerate (KRX: 051910, HQ Seoul); major producer of electronic-grade IPA for the semiconductor industry with strategic partnerships with major tech manufacturers. LG Chem supplies IPA to Asian semiconductor fabs and has significant presence in the Korean and broader Asian electronic chemicals market. Same company that is the world's #2 EV battery maker (LG Energy Solution is a spin-off) — LG Chem bridges the semiconductor chemicals market and the EV battery materials market. Also produces NMC cathode active materials for batteries, ABS resins, and engineering plastics.
Supplies these inputs
Thin-film composite RO membranes (FilmTec polyamide)
Replaceability
Substitutability 50% · 9 mo to replace
Business segments
- Petrochemicals40% rev
- Advanced Materials30% rev
- Life Sciences (Contract Pharma)15% rev
- Energy Solutions (Battery Cathode)15% rev
One of the world's three largest carbon black producers; tire-grade carbon black (Specialty Fluids, Reinforcement Materials segment) accounts for ~70% of Cabot revenue; operates plants across the Americas, Europe, and Asia supplying all major tire manufacturers.
Supplies these inputs
Activated carbon (GAC and carbon block)
Business segments
- Reinforcement Materials (Carbon Black)68% rev
- Performance Chemicals18% rev
- Activated Carbon14% rev
Fast-growing Chinese ion-exchange/adsorbent resin maker (Seplite); water treatment, pharma, metallurgy and direct-lithium-extraction (DLE) sorbents.
Supplies these inputs
Ion exchange resins (cation and anion)
Replaceability
Substitutability 55% · 9 mo to replace
Business segments
- Water Treatment Resins38% rev
- Pharmaceutical & Food Purification28% rev
- Metallurgy & Minerals Extraction22% rev
- Specialty & Functional Resins12% rev
Swedish company owned by Osaka Gas Chemicals (Japan) since 2014; 20 global facilities including large coconut shell plants in India and Sri Lanka
Supplies these inputs
Activated carbon (GAC and carbon block)
Replaceability
Substitutability 60% · 6 mo to replace
Business segments
- Coconut Shell Activated Carbon45% rev
- Coal-Based Activated Carbon35% rev
- Wood & Other Source AC15% rev
- Reactivation & Services5% rev
Sri Lanka coconut shell activated carbon specialist; 56,800 MT annual capacity; 6 facilities in Sri Lanka, Thailand, Indonesia; subsidiary of Hayleys PLC
Supplies these inputs
Activated carbon (GAC and carbon block)
Replaceability
Substitutability 60% · 6 mo to replace
Business segments
- Coconut Shell Activated Carbon90% rev
- Other Activated Carbon Products10% rev
California-based subsidiary of Nitto Denko (Japan); supplied Sorek 2 Israel (worlds largest desalination plant); four major seawater desalination markets globally
Supplies these inputs
Thin-film composite RO membranes (FilmTec polyamide)
Replaceability
Substitutability 50% · 9 mo to replace
Business segments
- Seawater RO Membranes (SWRO)40% rev
- Brackish Water RO (BWRO)30% rev
- Nanofiltration & Ultrafiltration20% rev
- Industrial & Specialty Membranes10% rev
Chinas largest RO membrane producer; 45% share of Chinas industrial RO market; 30M sqm/yr capacity; emerged from Chinese Academy of Sciences research
Supplies these inputs
Thin-film composite RO membranes (FilmTec polyamide)
Replaceability
Substitutability 60% · 6 mo to replace
Business segments
- Industrial RO Membranes (China Domestic)55% rev
- BWRO & NF Membranes25% rev
- Export RO Membranes15% rev
- Specialty Membranes5% rev
Sri Lanka's largest activated carbon producer; part of the Hayleys Group; manufactures coconut shell-based activated carbon exported globally for drinking water purification, gold recovery, and air treatment; one of the world's largest coconut shell carbon suppliers with plants in Sri Lanka, Thailand, and Indonesia.
Supplies these inputs
Activated carbon (GAC and carbon block)
Business segments
- Coconut Shell Activated Carbon80% rev
- Reactivation Services12% rev
- Water & Air Treatment Systems8% rev
Acquired X-Flow 2011; Enschede Netherlands primary production; high-quality PVDF and PES hollow fiber; municipal and industrial water treatment
Supplies these inputs
PVDF and polysulfone hollow fiber ultrafiltration membranes
Replaceability
Substitutability 55% · 9 mo to replace
Business segments
- X-Flow Hollow Fiber UF/MF Membranes35% rev
- Pool & Flow Control (Pentair Consumer)30% rev
- Commercial & Residential Water Treatment25% rev
- Industrial Process Water10% rev
