The manufacturers in Silesia are mostly large, established firms in heavy industry. Many of them serve the automotive sector, like NGK Ceramics Polska, which makes ceramic filters for engines, SFC Solutions, a supplier of fluid transfer systems, and Boryszew S.A. oddział Maflow w Tychach, which produces rubber hoses for automotive air conditioning. Eko-Okna S.A. manufactures window joinery, while ArcelorMittal Poland specializes in steel production.
A significant number of these companies are involved in building materials and metal processing. For instance, Aluprof manufactures aluminum systems, and KLIMAS Wkręt-met produces fastening technologies. There is also a notable presence of companies founded in the late 20th and early 21st centuries, reflecting a period of industrial development in the region.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
NGK Ceramics Polskangk.com.pl
Global leader in manufacturing technological materials with four production plants specializing in ceramic filters for Diesel and gasoline engines |
1,566 | |||
| 2 |
Eko-Okna S.A.ekookna.pl
One of the largest manufacturers of window joinery, offering a comprehensive range of PVC, aluminum, steel, and wood products with high quality and global distribution |
1,310 | |||
| 3 |
ArcelorMittal Polandpoland.arcelormittal.com
Leading steel producer in Poland with modern facilities and a focus on sustainability, quality, and leadership Specializing in steel production and coke export |
964 | |||
| 4 |
Aluprofaluprof.com
A leading manufacturer of aluminum systems in Europe with branches in multiple European countries and the United States, part of Grupa Kapitałowa Grupa Kęty SA |
589 | |||
| 5 |
SFC Solutionssfc-solutions.com
Supplier of fluid transfer systems, sealing solutions, and rubber compounds for the automotive industry, focusing on innovation, quality, and customer partnerships |
576 | |||
| 6 |
Imperial Tobacco Polskaimperial-tobacco.pl
A leading tobacco manufacturer in Poland, part of an international tobacco conglomerate, with modern production facilities and a portfolio of well-known cigarette brands |
441 | |||
| 7 |
Boryszew S.A. oddział Maflow w Tychachmaflow.com
Manufacturing rubber hoses for automotive air conditioning systems, supplying major global car and truck manufacturers with high-quality products. |
414 | |||
| 8 |
TROPICALtropical.pl
A leading producer in the zoological industry with top-quality products for fish, reptiles, rodents, mammals, birds, dogs, cats, and ornamental plants |
384 | |||
| 9 | 370 | ||||
| 10 |
Jastrzębska Spółka Węglowa SAjsw.pl
The company is a leading producer of high-quality coking coal and coke in the EU, supplying steel and power plant industries worldwide |
362 | |||
| 11 |
PROPOINTpropoint.pl
Provider of robotics and industrial automation solutions worldwide, offering programming, implementation, design, and manufacturing services, with a focus on innovation and growth |
360 | |||
| 12 |
Brembo Poland Sp. z o.o.brembo.com
A leading international manufacturer of brake discs, calipers, and complete brake systems for a wide range of vehicles, specializing in cutting-edge technology and reliability |
355 | |||
| 13 |
KLIMAS Wkręt-metwkret-met.com
Manufacturer of high-quality fastening technologies with advanced production plants, R&D, European approvals, exporting products to nearly 70 countries worldwide. |
347 | |||
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. | |||||
| 14 |
BMZ Polandbmz-battery.com
A global leader in lithium-ion power and energy storage systems, with innovative battery solutions for various applications and international conferences on battery technology |
335 | |||
| 15 |
PRESS GLASS Holding SApressglass.com
Leading glass processor in Europe, offering top-quality products through modern equipment, individual customer support, extensive logistics, and wide assortment of components |
314 | |||
| 16 |
Mokate Groupmokate.com
Family-owned group manufacturing and exporting diverse food products globally, including coffee, chocolate drinks, cakes, and tea, serving both retail and B2B markets. |
310 | |||
| 17 |
ZRE KATOWICE S.A.zre.com.pl
Utilizing 65 years of experience, the enterprise has evolved into a large technical facility specializing in energy solutions for domestic and international clients |
255 | |||
| 18 |
CEDROB FOODS S.A.cedrobfoods.pl
A leading meat processing company in Poland, part of a group with a strong market presence, specializing in a wide range of meat products |
234 | |||
| 19 |
CMC Polandcmc.com
Leader in steel production and recycling in Poland, focusing on quality, tradition, and innovation Emphasizes employee well-being and community engagement |
196 | |||
| 20 |
GRUPA ZARMENgrupa-zarmen.pl
A leading group specializing in comprehensive industrial investments with diverse activities in sectors such as energy, chemical, and metallurgical industries |
184 | |||
| 21 |
Mid Ocean Logistics Polandmidocean.com
A leader in printing services and promotional items, offering high-quality products with a focus on sustainability and social compliance |
117 | |||
| 22 |
Huta Pokój S.A.hutapokoj.eu
A capital group specializing in cold-formed steel products, hot-rolled steel products, and steel structures with a history dating back to 1840 |
66 | |||
| 23 |
PSO Maskpol S.A.maskpol.com.pl
Leading Polish manufacturer of ballistic protection, chemical protection, and preventive security products, part of a defense group with modern research facilities and production technologies |
46 | |||
| 24 | 34 | ||||
| 25 |
Karwalaavionaut.com
A company specializing in producing pushchair elements, child safety car seats, and system components They invest in technology and social responsibility |
16 | |||
| 26 |
LaserSpeclaserspec.eu
The company specializes in producing high-quality precision parts, offering prototyping services and repeatable production of elements based on submitted projects or ideas |
8 | |||
| 27 |
KRM-Trade sp.z o.o.krm-trade.pl
Supplying European market with high-quality rubber products since 2018 Specializing in technical, industrial, road, and custom-made products to meet customer needs perfectly |
3 | |||
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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 11, 2026.
More company lists in Silesia
- The largest companies in Silesia 190
- Multinational companies in Silesia 39
- Companies with in-house R&D in Silesia 29
- IT services companies in Silesia 29