Nexson Group

What Nexson Group does

Nexson Group (legal entity NEXSON GROUP INDUSTRY, SAS) is a privately held French designer and manufacturer of welded heat exchangers and pressure vessels, headquartered in Garchizy, France. Founded in 1993, the company has over 30 years of operating history and is described as a "hidden champion" in the global heat exchanger market, exporting more than 98% of its output to customers in 80+ countries. Its product portfolio is organized around seven proprietary families: GREENSPIRAL™ spiral plate, GREENBOX™ welded plate, thermoline™ gasketed/semi-welded/double-wall plate (via the 2024 acquisition of German manufacturer Thermowave GmbH), GREEN P&S plate & shell, PCHE printed circuit heat exchangers (via the 2026 strategic partnership with Shaanxi Zhituo), CWHE coil-wound, and GREENTUBE™ RT/TT rectangular tube and tube-in-tube units, supplemented by Skid CIP/CTO cleaning systems. Technology differentiation rests on patented designs (e.g., the GREENBOX™ flexible corner, the latest RTHE patent) and access to vacuum diffusion bonding for PCHE, enabling operation across extreme pressure (up to 1,000 bar) and temperature (-250°C to 1,100°C) ranges.

The company serves industrial enterprise customers across oil & gas, petrochemical, refining, chemicals, pulp & paper, HVAC and refrigeration, food & beverage, heavy industry (mining, steel), pharmaceuticals, power generation, and emerging clean energy (hydrogen, sCO2, LNG, carbon capture). Its go-to-market is direct enterprise field sales for complex, custom-engineered projects, with pricing on a quote basis tied to specification, materials, size, and complexity. Customer logos include TotalEnergies, BP, Aker Solutions, Axens, Reliance, Saint-Gobain, ArcelorMittal, BASF, Dow, Arkema, Solvay, Huntsman, KemOne, INOVYN, Sasol, GSK, Cargill, Wilmar, Veolia, Andritz, and Valmet. Recent marquee deliveries include 16 custom heat exchangers for a major FPSO project (January 2026) and the world's largest spiral heat exchangers for a mining project (December 2025).

Nexson Group's revenue model is one-time equipment sales, complemented by aftermarket spare parts and service through a global service centers network. Operations span three production hubs: Garchizy (France, HQ), Berga (Germany, via Thermowave), and Huairou District, Beijing (China, new factory opened 2024). The company holds ISO 9001:2015 certification, complies with ASME, GOST, PED, U-Stamp, and API 664 standards, was awarded an Ecovadis Bronze Medal in 2026, and is GDPR/RGPD compliant. Leadership is founder-led: Charles Bonnafous serves as Founder and CEO. Ownership is concentrated among founding stakeholders, with no disclosed venture capital, private equity, or parent company involvement, and the firm funds acquisitions and capacity expansion organically.

Name

Nexson Group

Legal name

NEXSON GROUP INDUSTRY

Website

https://nexson-group.com

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

101–250 employees

Short description

Nexson Group designs and manufactures custom welded heat exchangers and pressure vessels for industrial customers in oil & gas, petrochemical, refining, chemicals, HVAC, food & beverage, and clean energy sectors. Founded in 1993 in France, the company exports to 80+ countries with proprietary spiral, plate, PCHE, and coil-wound technologies.

Ownership category

akta.pro rank

Product category

Industrial Heat Exchangers

NAICS

Power Boiler and Heat Exchanger Manufacturing (332410), Power Boiler and Heat Exchanger Manufacturing (33241), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414)

SIC

Fabricated Plate Work (Boiler Shops) (3443), Heating Equipment, Except Electric & Warm Air Furnaces (3433), Sheet Metal Work (3444)

akta.pro primary industry

Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC)

akta.pro secondary industries

Heat Exchangers & Thermal Transfer Equipment (IMAHAKAC), Boilers, Furnaces & Process Heating Equipment (IMAHAKAD)

Keywords

• Welded heat exchangers
• Industrial thermal equipment
• Pressure vessel manufacturing
• Plate heat exchangers
• Thermal transfer solutions

Headquarters

HQ city

Garchizy

HQ country

France

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Heat Exchanger Equipment Sales: Custom-designed and manufactured heat exchangers sold to industrial customers across oil & gas, petrochemical, refining, power generation, and other sectors. Products include spiral, welded plate, plate & shell, PCHE, coil-wound, and other heat exchanger types.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels8 records

Core offering

Nexson Group designs and manufactures fully welded heat exchangers and pressure vessels for industrial customers, offering custom-engineered thermal solutions across spiral, plate, plate-and-shell, printed circuit, coil-wound, and tube-in-tube configurations. Products serve oil & gas, petrochemical, refining, power generation, pulp & paper, HVAC, food & beverage, chemicals, mining, and emerging clean energy (hydrogen, sCO2, LNG) applications. Each unit is custom-designed to client specifications with operating ranges extending from -250°C to 1100°C and pressures up to 1400 barg.

Product overview

Nexson Group is a designer and manufacturer of fully welded heat exchangers offering a comprehensive portfolio of specialized thermal solutions. The product portfolio centers around major heat exchange families: GREENSPIRAL™ spiral plate exchangers, GREENBOX™ welded plate exchangers, thermoline™ plate exchangers (acquired through Thermowave), GREEN P&S™ plate & shell exchangers, PCHE printed circuit heat exchangers (with strategic partner Shaanxi Zhituo), CWHE coil-wound exchangers, GREENTUBE™ TT tube-in-tube exchangers, RTHE rectangular tube exchangers, and modular Skid CIP/CTO systems. The company operates as an integrated designer and manufacturer, with products ranging from standard gasketed plate exchangers to highly specialized diffusion-bonded PCHE units for extreme conditions (up to 1000 bar, 1100°C).

Differentiator

Problem solved

Functional benefit

Brands

• GREENSPIRAL™: Spiral plate heat exchangers - self-cleaning, single-channel design for fouling applications
• GREENBOX™
• thermoline™
• GREENP&S
• GREENTUBE™
• PCHE

Products and services

• GREENSPIRAL™ Spiral Plate Heat Exchangers Self-cleaning single-channel spiral plate heat exchangers for high-fouling, particulate, or high-viscosity media, operating from -100°C to 500°C with pressures up to 100 bar and thermal performance approximately 3x that of shell-and-tube units. Designed for industrial customers in refining, chemicals, pulp & paper, mining, and sludge processing.
• GREENBOX™ Welded Plate Heat Exchangers Fully welded compact plate heat exchangers combining high thermal performance with mechanical strength, handling pressures up to 50 bar and temperatures up to 450°C, with removable side panels for inspection and cleaning. Patented flexible corner design delivers 5x the thermal efficiency of traditional shell-and-tube exchangers with temperature approach as low as 2°C.
• GREEN P&S Plate & Shell Heat Exchangers Hybrid thermal systems combining the thermal efficiency of circular plates with the mechanical strength of a cylindrical shell, available in Type O (removable bundle), Type W (fully welded), and Type K (reboiler) variants. Operating pressures up to 150 bar and temperatures from -196°C to 500°C.
• PCHE Printed Circuit Heat Exchangers Ultra-compact printed circuit heat exchangers using ultra-precise chemical etching of micro-channels (0.1-2mm) fused via vacuum diffusion bonding, with thermal efficiency up to 98%, pressure tolerance 0.2-100 MPa, and temperature range from -200°C to over 1100°C. Volume reduced by 1/6 to 1/10 and mass by 1/4 to 1/7 compared to traditional shell-and-tube units. Targeted at hydrogen, sCO2, LNG, and offshore applications.
• CWHE Coil Wound Heat Exchangers (GREENTUBE™) Multi-stream spiral-wound tube bundle heat exchangers enabling simultaneous heat transfer between up to 8 process streams in a single shell. Shell-side pressures up to 300 barg, tube-side pressures up to 1400 barg, operating temperatures from -250°C to 650°C, with footprint approximately 1/10 that of traditional shell-and-tube units.
• RTHE Rectangular Tube Heat Exchangers (GREENTUBE™ RT) Fully welded compact heat exchangers designed for sludge-to-sludge heat recovery and biosolids processing, handling particles up to 30mm in diameter with minimal pressure drop. Operating conditions up to 150°C and 8 bar pressure, with modular hinged design available for easy maintenance.
• GREENTUBE™ TT Tube-in-Tube Heat Exchangers Concentric tube-in-tube heat exchangers for efficient and controlled heat exchange in harsh processes including sludge treatment, pasteurization, asphalt, and oil & gas, handling high-viscosity or contaminated fluids with strong performance at low flow rates.
• thermoline™ Plate Heat Exchangers Gasketed, semi-welded, and double-wall plate heat exchangers for HVAC, industrial refrigeration, food & beverage, and chemical processing applications, including thermolineEco, thermolineVario, thermolinePure, and thermolinePlus series. Brought into Nexson Group's portfolio through the Thermowave GmbH acquisition.
• Skid CIP/CTO Modular Systems Modular CIP (Clean-in-Place) and CTO (Clean, Test, Operate) skid systems for chemical cleaning of heat exchangers, with heating capability up to 70°C and PLC-based water circulation management customizable to specific requirements.

Quantifiable outcome

• PCHE volume reduced by 1/6 to 1/10 compared to traditional shell and tube exchangers
• +5 more outcomes

Named customers21 records

Segments8 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability1 record

Feature8 records

Partnerships

Three partnerships are on record, tiered flagship, core and minor.

• Shaanxi Zhituo Solid-State Additive Manufacturing Technology Co., Ltd. (ZTW)flagshipStrategic or Co-development Partner · 15 June 2026Major strategic and commercial partnership dedicated to the development, promotion, and deployment of Printed Circuit Heat Exchangers (PCHE). Nexson Group provides conceptual expertise and engineering excellence while Shaanxi Zhituo provides advanced production and assembly capabilities using vacuum diffusion bonding technology. The partnership includes joint development projects to co-design new innovative products based on PCHE technology. ZTW holds over 100 patent applications (50+ granted), is ASME U Stamp certified, and has 80%+ of R&D team holding PhDs and Master's degrees.
• Thermowave GmbHcoreStrategic or Co-development Partner · 14 March 2024Nexson Group acquired Thermowave GmbH, a German manufacturer of configured plate heat exchangers, from Güntner Group. Thermowave operates as an independent entity under the Nexson Group umbrella, strengthening and complementing the portfolio with laser-welded and semi-welded plate heat exchangers. Thermowave brings over 30 years of experience, 100+ employees, and 'Made in Germany' quality standards. The acquisition expands Nexson Group's activity in high-growth sectors including H2, renewable fuels transformation, and carbon capture.
• Güntner GmbH & Co KGminorOthersGlobal leader in heat exchanger technology based in Fürstenfeldbruck, Germany. Parent company of Thermowave GmbH before acquisition by Nexson Group. Operates worldwide with production centers in Europe, Asia, and America. 90-year history in food refrigeration and comfort air conditioning to power & energy refrigeration.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Alfa Laval: Swedish global leader in heat transfer, separation, and fluid handling. Alfa Laval's plate, welded, and spiral heat exchanger portfolio directly competes with Nexson's GREENSPIRAL, GREENBOX, and thermoline product families across the same oil & gas, chemical, and HVAC customers.
• Kelvion: German manufacturer of heat exchangers (formerly GEA Heat Exchangers). Kelvion's plate, shell-and-tube, and welded heat exchanger lines overlap directly with Nexson's core welded HE portfolio and serve identical refining, chemical, and power-generation customers.
• Chart Industries: US-based cryogenic and thermal transfer equipment specialist with strong positions in LNG, hydrogen, and CO2 — the same emerging clean-energy applications where Nexson's PCHE and CWHE compete. Particularly relevant overlap in high-pressure, low-temperature heat exchangers.
• SPX Heat Transfer (SPX Technologies): Provider of engineered heat transfer solutions including plate, brazed, and welded heat exchangers for HVAC, chemical, and industrial markets. Direct competitor across multiple of Nexson's product families.
• API Heat Transfer: US manufacturer of heat exchangers including plate, shell-and-tube, and welded designs serving chemical, oil & gas, and power generation. Closely comparable in custom-engineered heat exchanger scope.
• Funke Wärmeaustauscher: German specialist in plate heat exchangers including welded and gasketed designs. Directly comparable to Nexson's thermoline and GREENBOX lines in chemical, HVAC, and industrial applications.
• Vahterus: Finnish manufacturer specializing in spiral plate heat exchangers — Nexson's most direct competitor in the GREENSPIRAL™ product category for fouling, viscous, and particulate media applications.

Broad incumbents

• SWEP (Dover Corporation): Part of Dover, SWEP produces brazed plate heat exchangers for HVAC and refrigeration — overlapping with Nexson's thermoline and Thermowave plate HE product lines at scale.
• Danfoss (Heat Exchanger segment): Danfoss produces plate heat exchangers for district heating, HVAC, and industrial applications under its Sondex brand. Comparable in plate HE scope, with broader refrigeration and climate solutions portfolio.

Regional players

• Hisaka Works: Japanese manufacturer of plate and shell-and-tube heat exchangers serving chemical, food, and HVAC markets across Asia. Regional peer to Nexson's APAC expansion ambitions with similar product breadth.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

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Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Nexson Group