The chemical sector in Wallonia features a mix of established industrial groups and specialized manufacturers. Companies like Lhoist and Carmeuse are global leaders in lime and mineral-based products, while AGC Glass Europe produces flat glass for various industries. Prayon specializes in phosphorus chemistry, and Knauf Insulation focuses on energy-efficient insulation materials. These firms represent a significant part of the region's industrial landscape, with several operating internationally.
A notable pattern among these companies is their long history, with many founded in the late 19th or early 20th century. Lhoist was established in 1889, Carmeuse in 1860, and Heidelberg Materials Benelux in 1873. This indicates a mature industrial base with deep roots in materials processing and manufacturing. The companies are diverse, ranging from mining and glass production to advanced chemical manufacturing and environmental services, reflecting a broad industrial ecosystem.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Lhoistlhoist.com
Global leader in lime, dolime, and minerals, operating in over 25 countries, with a focus on customer proximity and high-quality solutions Join our team! |
3,515 | |||
| 2 |
AGC Glass Europeagc-glass.eu
Producer and distributor of flat glass for building and automotive industries, as well as various other sectors including transport, solar power, and high-tech applications |
3,153 | |||
| 3 |
Knauf Insulationknauf.com
Manufactures diverse insulation materials and solutions focused on enhancing energy efficiency and sustainability in residential, commercial, and industrial buildings worldwide. |
2,183 | |||
| 4 |
Carmeusecarmeuse.com
Global manufacturer of lime, limestone, and mineral-based products for industrial and construction applications, as well as offering environmental benefits and equipment services |
2,047 | |||
| 5 | 1,190 | ||||
| 6 |
Prayonprayon.com
A global leader in phosphorus chemistry, manufacturing phosphate and fluorine solutions for various industries like food, water treatment, electronics, and pharmaceuticals |
1,064 | |||
| 7 |
Magotteauxmagotteaux.com
Global supplier providing process optimization products, grinding media, and castings for mining, cement, and power industries through expert advice and sustainable manufacturing. |
966 | |||
| 8 |
Heidelberg Materials Beneluxheidelbergmaterials-benelux.com
Leading manufacturer of cement, aggregates, and concrete in Belgium and the Netherlands with strong focus on environmental responsibility and carbon neutrality. |
666 | |||
| 9 |
Bardahl Sadapsbardahl.fr
A global company founded in 1954, specializing in manufacturing and distributing high-performance chemical products for various markets, including automotive, industrial, and DIY |
453 | |||
| 10 | 366 | ||||
| 11 |
Chemvironchemviron.eu
An international manufacturer specializing in activated carbon products for water and air purification, offering innovative treatment systems and services globally |
340 | |||
| 12 |
3B-the fibreglass company3b-fibreglass.com
Development and supply of fibreglass products and technologies for reinforcing thermoplastic and thermoset polymers with global manufacturing and R&D. |
335 | |||
| 13 |
Vandeputte Groupvandeputte.com
Processing flaxseed into linseed oil, manufacturing soaps and detergents, and producing vegetable oil derivatives for various industrial applications. |
241 | |||
| 14 |
GALACTIClactic.com
Support manufacturers and distributors worldwide with natural antimicrobials, lactic acid derivatives, fermentation expertise, and tailored solutions for diverse industries. |
213 | |||
| 15 |
Holcim Belgiumholcim.be
This organization focuses on building progress for humanity and the planet through innovation, sustainability, and collaboration for a greener and smarter world for all |
203 | |||
| 16 |
Carmeuse s.a.carmeuse.be
Global producer of lime, high calcium limestone, and dolomitic stone for various industries, committed to sustainability and environmental impact |
183 | |||
| 17 |
Saint-Gobain BENELUXsaint-gobain-benelux.com
A global leader in sustainable construction, designing, manufacturing, and distributing materials for the construction and industrial markets Committed to carbon neutrality by 2050 |
169 | |||
| 18 |
Mactac Europemactacgraphics.eu
A performance-driven innovator in the pressure sensitive industry with roots dating back to 1940s, specializing in manufacturing adhesive products globally |
131 | |||
| 19 |
Sopura, a part of Kersiakersia-group.com
Global provider of customized cleaning, disinfection, and water treatment solutions for brewing, beverage, and food industries Trusted for expertise and quality results |
127 | |||
| 20 |
Vesuvius Ghlinvesuvius.com
Specializes in developing solutions for controlling the flow of molten steel, including robotic casting, nozzles, plates, stoppers, and slide gate systems for regulating steel flow |
111 | |||
| 21 |
Fairoils Groupfairoils.com
Leader in producing ethically sourced essential oils & vegetable oils for various industries Operations in Kenya, Madagascar, Eastern/Southern Africa, Balkans, and offices across Europe & Australia |
101 | |||
| 22 |
Materia Novamaterianova.be
Develops sustainable materials and industrial processes through surface treatments, plasma technologies, and biopolymers while providing eco-design evaluations and technology scaling for industrial applications. |
101 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 23 |
Yara Tertreyara.be
A leading producer of essential plant nutrients, contributing to food security through sustainable mineral fertilizer production and environmental responsibility |
100 | |||
| 24 |
Delta Plasticsdeltaplastics.be
Manufacturing injection-moulded parts using modern injection-moulding technology. Equipped with presses from 30 to 150 tonnes and auxiliary equipment for automated, high-quality production. |
78 | |||
| 25 |
PlastiService Groupplastiservice.com
Specialized supplier and processor of technical synthetic materials offering custom solutions, diverse products, and multisector expertise with strong customer service. |
68 | |||
| 26 |
EURENCO CLERMONTeurenco.com
Leading global producer of spherical powders for defense, security, sports, hunting, industrial tools, and ammunition reloading for enthusiasts worldwide. |
65 | |||
| 27 |
KLK Tensachem S.A.klkoleo.com
Global manufacturer of anionic surfactants for home care and personal care markets Also offers contract manufacturing and Mass Balance products through RSPO certification |
61 | |||
| 28 |
TIMAC AGRO BeLuxbe.timacagro.com
Specializing in plant and animal nutrition, the company offers patented quality agricultural products and personalized advice to farmers through constant innovation and partnerships |
58 | |||
| 29 |
Gamma-Wopla / Smart-Flowgw-sf.com
Develops, produces, and exports stackable, nestable, foldable plastic containers and pallets across Europe for various industrial sectors. |
54 | |||
| 30 |
Nanocyl SAnanocyl.com
A leader in manufacturing, developing, and commercializing Carbon Nanotubes (CNTs) and formulated products for high performance industrial solutions in various sectors |
44 | |||
| 31 |
MINAFIN GROUPminafin.com
Specializes in pharmaceutical, cosmetic, renewable, demanding, high-pressure, polymer, and green extraction chemistries with global industrial sites. |
37 | |||
| 32 | 35 | ||||
| 33 |
BEAL International s.a.bealinternational.com
Manufacturer and distributor of specialized construction products including colored coatings, decorative alternatives to concrete, and water repellents for various building applications |
34 | |||
| 34 |
FERONYL saferonyl.com
Specialist in injection molding of polymers, composites, and metal alloys, providing development and manufacturing of technical components for land and air applications. |
30 | |||
| 35 |
Sobelcompsobelcomp.be
Designs and manufactures composite material parts for clients across various high-value markets, including aviation, defense, and industrial sectors. |
30 | |||
| 36 |
SIMTECHsimtech.be
Specializing in elastomer, plastomer, and coated fabrics-based products for various industries Offering solutions for glass laminating, hollow glass handling, flexible fuel cells, and collapsible rubber pillow tanks |
24 | |||
| 37 |
Minasolve Personal Careminasolve.com
Supplier of innovative, nature-derived, and sustainable ingredients for the personal care industry, offering solutions for formulation challenges and meeting market trends |
21 | |||
| 38 |
Chimiderouilchimiderouil.com
Specializing in cleaning metal surfaces of industrial facilities, this company masters the entire process from product research and manufacturing to application of treatment techniques |
19 | |||
| 39 |
Mertens Plastique SAmertensplastique.be
Specializing in custom plastic parts design, manufacturing, and installation for various industries, including chemicals, water distribution, pharmaceuticals, and more Constantly evolving to meet specific needs |
15 | |||
| 40 |
EUROPLEXeuroplex.be
Leading provider of high-quality engineered plastic solutions through CNC machining and injection molding, specializing in a wide range of materials with a focus on precision and innovation |
12 | |||
| 41 |
IONICS Surface Technologiesionics-group.com
Specializing in surface technologies for various substrates, we provide innovative solutions for industries like automotive, architecture, and electronics, striving for excellence and sustainability |
10 | |||
| 42 | 
LyondellBaselllyondellbasell.com
A global chemical industry leader creating sustainable solutions for everyday living through advanced technology, investments, and promoting a circular economy |
5 | |||
| 43 |
DEQUENNE CHIMIEdequennechimie.be
Manufacturer based in Belgium specializing in producing highly pure boehmite and pseudoboehmite alumina products |
4 | |||
| 44 |
CHAPUT Caoutchoucchaput-caoutchouc-belgique.com
A family-owned company with a store offering various supplies and a factory producing custom molded and cut elastomer parts for small to medium series production |
3 | |||
| 45 |
Saint-Gobain Ecophon Belgium & Luxembourgecophon.com
This company develops, produces, and sells acoustic products and systems that improve employee well-being and performance in the workplace |
1 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
More company lists in Wallonia
- The largest companies in Wallonia 1,106
- Multinational companies in Wallonia 234
- Companies with in-house R&D in Wallonia 155
- Manufacturers in Wallonia 151
- Retail chains in Wallonia 110
- Family-owned companies in Wallonia 82
- Hardware manufacturers in Wallonia 75
- Food and Beverage Manufacturing companies in Wallonia 75
- IT Services and IT Consulting companies in Wallonia 67
- IT services companies in Wallonia 67
- Critical infrastructure operators in Wallonia 65
- Consumer goods companies in Wallonia 59
- Software Development companies in Wallonia 58
- Transportation, Logistics, Supply Chain and Storage companies in Wallonia 57
- SaaS companies in Wallonia 54
- Retail companies in Wallonia 52
- Contract manufacturers in Wallonia 51
- Pharmaceutical companies in Wallonia 45
- Aerospace and defence companies in Wallonia 44
- Education providers in Wallonia 43
- Financial services firms in Wallonia 41
- Distributors and wholesalers in Wallonia 39
- Food and beverage companies in Wallonia 38
- Public sector organisations in Wallonia 38