RotH2
RotH2 is a French manufacturer of high-pressure steel cylinders for hydrogen storage (up to 1000 bar), industrial accumulator shells, and scuba diving cylinders. The company serves aerospace, defense, energy, and hydrogen mobility customers globally with 50 employees and €5.6M in 2025 revenue.
- Company typePublic
- Founded1975
- HeadquartersMions, France
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What RotH2 does
RotH2 (formerly Roth) is a French industrial manufacturer specializing in very high-pressure gas storage solutions, with operations based at a single 50-employee site in Mions, near Lyon. The company produces steel pressure tanks and cylinders using hot spinning and/or hammering techniques on seamless steel alloy tubes, with products rated up to 1000 bar and operating across a temperature range of -60°C to +350°C. The portfolio comprises three core product lines: hydrogen cylinders (Bouteilles d'hydrogène) addressing the permeability challenge of hydrogen's small atomic size, accumulator shells (Accumulateurs) for hydropneumatic and industrial applications, and scuba diving cylinders (Bouteilles de plongée) for recreational and professional use. The company also produces stainless steel cylinders compliant with RCC-M nuclear regulations and is developing Type V composite tanks for next-generation hydrogen storage.
The company's primary customers are industrial enterprises across aerospace (Airbus, Dassault), defense (US Navy), energy (Total, ERDF, McPhy, Atawey, HRS, ErgoSup, Mahytec), automotive (Hitachi), and emerging mobility (Dronevolt, ARPA), with research institutions such as the University of Western Cape's HySA program also featuring. RotH2 generates revenue through direct B2B sales of industrial cylinders (quote-based, multi-year contracts) and through a reseller network for scuba diving products spanning 52 countries. The company recorded €5.6 million in revenue in FY2025 and is publicly traded on Euronext Access+ Paris under ticker MLROT following its June 19, 2026 listing, with a stated growth target of €30 million by 2029/30. The investor base includes PAMASO Capital, which acquired the Mions plant in 2014, and Tonner Drones, which holds an 18.7% stake following the IPO.
RotH2 firmographics
Firmographics- Name
- RotH2
- Legal name
- ROTH2
- Website
- https://roth2.com
- Company type
- Public
- Founded year
- 1975
- Operating status
- Ipo
- Headcount range
- 11–50 employees
- Short description
- RotH2 is a French manufacturer of high-pressure steel cylinders for hydrogen storage (up to 1000 bar), industrial accumulator shells, and scuba diving cylinders. The company serves aerospace, defense, energy, and hydrogen mobility customers globally with 50 employees and €5.6M in 2025 revenue.
- Ownership category
- akta.pro rank
RotH2 industry classification
Industry- Product category
- Industrial High-Pressure Pressure Vessels and Cylinders
- NAICS
- Metal Tank (Heavy Gauge) Manufacturing (33242), Metal Tank (Heavy Gauge) Manufacturing (332420)
- akta.pro primary industry
- Compressed Hydrogen Storage Systems (Cylinders, Bundles, Tube Trailers) (EUAFAEAA)
- akta.pro secondary industry
- Gas Handling Equipment & Storage (Cylinders/Tanks/Valves) (IMAEACAL)
Keywords
Where RotH2 is headquartered
LocationHeadquarters
- HQ city
- Mions
- HQ country
- France
- HQ region
- Europe
Offices1 record
Markets served
RotH2 business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Operations, Technology or R&D, Infrastructure
Revenue model
- Steel Pressure Tank Sales: RotH2 generates revenue primarily from manufacturing and selling steel pressure tanks and cylinders. The company produces 20,000 steel tanks annually and generated €5.6 million in revenue in 2025, with plans to grow to €30 million by 2029/30.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Industrial pressure tanks and cylinders |
Go-to-market motion2 records
Distribution channels2 records
Marketing channels4 records
RotH2 product offering
Product offeringCore offering
RotH2 manufactures high-pressure steel cylinders and tanks for three core product lines: hydrogen storage cylinders rated up to 1,000 bar, hydropneumatic accumulator shells for industrial fluid applications, and scuba diving cylinders in various sizes. The products are produced using a proprietary hot-spinning process on seamless steel alloy tubes, with extreme temperature tolerance (-60°C to +350°C) and extensive international certifications (ISO 9001, CE, ASME, DNV, RINA, ABS) enabling distribution to aerospace, defense, energy, and recreational diving customers.
Product overview
RotH₂ is a French manufacturer specializing in very high-pressure gas storage solutions, producing steel pressure tanks and cylinders capable of withstanding pressures up to 1000 bar. The product portfolio consists of three core product lines: hydrogen cylinders (Bouteilles d'hydrogène) designed specifically for hydrogen's small atomic size, accumulator shells (Accumulateurs) for hydropneumatic and industrial fluid applications, and scuba diving cylinders (Bouteilles de plongée) for recreational and professional use. These are complemented by specialized products including large-capacity CO2 extinguishers, medical and rescue cylinders, and stainless steel (inox) products for nuclear and aeronautics environments. The company is currently developing Type V composite tanks as a next-generation technology. RotH₂ also supplies pre-configured storage racks combining multiple cylinders for specific applications such as hydrogen refueling stations. The company went public on Euronext Access+ Paris in June 2026 under the ticker MLROT (ISIN: FR001400EA65).
Differentiator
Problem solved
Functional benefit
Products and services
- Hydrogen Cylinders (Bouteilles d'hydrogène) High-pressure steel hydrogen storage cylinders rated up to 1,000 bar, designed to address hydrogen's small atomic size which passes through conventional gas storage materials. Used in stationary applications for mobile machinery, industrial processes, energy storage in buildings, fuel cell integration for electric vehicles, and hydrogen refueling stations.
- Accumulator Shells (Accumulateurs) High-pressure fluid tank shells used in hydropneumatic accumulators and compressed/liquefied gas applications. Suitable for civil and military uses including Airbus A340 braking systems, Formula 1 suspension, wind turbines, oil drilling platforms, and nuclear power plants. Rated for temperatures from -60°C to +350°C.
- Scuba Diving Cylinders (Bouteilles de plongée) Steel scuba diving cylinders and blocks ranging from 2.5L to 20L, available in breathable air and nitrox variants at 230 and 300 bar service pressure. Customizable on request for resellers (fittings, colour, screen printing) and renowned for safety over more than 40 years of development.
- Specific Products (Produits spécifiques) Specialized cylinders including double-headed gas storage buffers, pure industrial gas cylinders, large-capacity CO2 extinguishers (>10L), and rescue, medical, and fire-fighting system cylinders.
- Stainless Steel Products (Produits en inox) Stainless steel cylinders manufactured for demanding environments such as nuclear power plants and aeronautics, compliant with RCC-M regulations. Produced using drawing, flow forming of ogives, heat treatment, machining, dye penetrant testing, cleaning, and dimensional control processes.
- Type V Composite Tanks Revolutionary composite tank technology under development for hydrogen and high-pressure gas storage, positioned as the next-generation product beyond steel tanks.
Quantifiable outcome
- Hydrogen combustion generates about 3 times more energy than petrol at constant weight
- +1 more outcomes
Companies that use RotH2
Customer profileNamed customers14 records
Segments3 records
Ideal customer profiles3 records
RotH2 technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
RotH2 partnerships and signals
Strategic signalScale indicators7 records
Recent moves7 records
Expansion highlights6 records
RotH2 competitors and assessment
Company assessmentDirect peers
- Worthington Enterprises: US manufacturer of pressure cylinders, propane tanks, and related products serving industrial gas, energy, and consumer markets. Direct competitor in steel pressure cylinders with global distribution.
- Everest Kanto Cylinder: Indian manufacturer of high-pressure gas cylinders for industrial, medical, and specialty gas applications. Comparable in product line to RotH2's steel pressure cylinders.
- Norris Cylinder: US manufacturer of high-pressure steel and aluminum cylinders for industrial, medical, and specialty gases including hydrogen. Comparable in traditional steel pressure cylinder manufacturing to RotH2.
- Beijing Tianhai Industry: China-based manufacturer of high-pressure gas cylinders for CNG, hydrogen, and industrial gases with global distribution. Directly competes in the global cylinder market where RotH2's scuba products already span 52 countries.
- Luxfer Holdings: Global manufacturer of high-pressure gas cylinders including composite and aluminum cylinders for industrial gases, aerospace, defense, and hydrogen applications. Direct competitor to RotH2 in high-pressure cylinders with overlapping aerospace/defense certifications and a much broader scale.
- Hexagon Composites: Norwegian manufacturer of composite pressure cylinders for CNG, hydrogen, and industrial gases with a dedicated Hydrogen business unit. Direct competitor in next-generation composite hydrogen storage where RotH2 is developing Type V tanks.
- Faber Industrie: Italian manufacturer of composite cylinders for CNG, hydrogen, and industrial gases, with a strong European footprint. Directly competes with RotH2 in hydrogen storage cylinders and serves many of the same refueling station customers.
Broad incumbents
- Chart Industries: US-based broad supplier of cryogenic and hydrogen equipment including liquid hydrogen tanks and fueling systems. Adjacent in hydrogen storage infrastructure but operates at significantly larger scale and across broader cryogenic and industrial gas portfolios.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
RotH2 social profiles
Digital presenceRotH2 compliance and trust
Trust signalCompliance9 records
RotH2 financial estimates
Financial estimateRevenue estimate
Valuation estimate
RotH2 leadership team
Management profileNumber of profiles
Profiles4 records
RotH2 funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
RotH2 M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about RotH2
What does RotH2 do?
RotH2 manufactures high-pressure steel cylinders and tanks for three core product lines: hydrogen storage cylinders rated up to 1,000 bar, hydropneumatic accumulator shells for industrial fluid applications, and scuba diving cylinders in various sizes. The products are produced using a proprietary hot-spinning process on seamless steel alloy tubes, with extreme temperature tolerance (-60°C to +350°C) and extensive international certifications (ISO 9001, CE, ASME, DNV, RINA, ABS) enabling distribution to aerospace, defense, energy, and recreational diving customers.
Is RotH2 a public or private company?
RotH2 is a public company. It is classified as public and is currently ipo.
When was RotH2 founded?
RotH2 was founded in 1975. It employs 11 to 50 people.
Where is RotH2 based?
RotH2 is headquartered in Mions, France, in the Europe region.
How does RotH2 make money?
One revenue line is on record: steel Pressure Tank Sales.
Who are RotH2's main competitors?
Direct peers on record are Worthington Enterprises, Everest Kanto Cylinder, Norris Cylinder, Beijing Tianhai Industry, Luxfer Holdings, Hexagon Composites and Faber Industrie. Chart Industries is listed as a broad incumbent.
Does RotH2 have an API?
No public API is recorded for RotH2.
What industry is RotH2 in?
RotH2's product category is Industrial High-Pressure Pressure Vessels and Cylinders. Its primary akta.pro industry code is EUAFAEAA, Compressed Hydrogen Storage Systems (Cylinders, Bundles, Tube Trailers), with a secondary code of IMAEACAL, Gas Handling Equipment & Storage (Cylinders/Tanks/Valves). Its NAICS code is 33242.