# 50 leading chemical companies in Lombardy

Tamtam tracks 78 chemical companies headquartered in Lombardy. This list ranks the 50 largest by number of employees on LinkedIn, led by Pirelli, Mapei and Zambon. Their median headcount is 344. Half of them were founded in 1946 or later. The most common headquarters are Milan (12), Bergamo (6) and Monza (2).

These Lombardy-based companies operate primarily in the chemical sector, with a notable presence of manufacturers of specialty chemicals, industrial gases, and pharmaceutical ingredients. The list comprises established mid-sized and large firms, many with a long history. Pirelli, founded in 1872, is a global leader in tyre production. Mapei, established in 1937, manufactures chemical products for the building industry. Zambon develops pharmaceutical and healthcare solutions, while SOL Group specializes in gases and biotech products. Olon, founded in 2003, focuses on active pharmaceutical ingredients.

A significant pattern observed is the concentration of headquarters in Milano, with several other major players located in cities like Monza and Bergamo. This suggests a strong regional hub for the chemical and related manufacturing industries in Lombardy.

🇮🇹 Lombardy · 50 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Pirelli](https://www.tamtam.ai/c/pirelli) (pirelli.com)<br>A global leader in tyre production with a strong focus on technological innovation, high-end quality, and Italian heritage, catering to consumer markets worldwide | Motor Vehicle Manufacturing | 🇮🇹 Milan | 15,159 | 1872 |
| 2 | [Mapei](https://www.tamtam.ai/c/mapei) (mapei.com)<br>A leading manufacturer of chemical products for the building industry, contributing to global architectural and infrastructural projects with a focus on specialization, internationalization, R&D, and sustainability | Chemical Manufacturing | 🇮🇹 Milan | 7,645 | 1937 |
| 3 | [Zambon](https://www.tamtam.ai/c/zambon) (zambon.com)<br>Develops innovative pharmaceutical and healthcare solutions, including treatments for respiratory, urological, and serious diseases like Parkinson's, and offers patient support programs. | Pharmaceutical Manufacturing | 🇮🇹 Bresso | 2,595 | 1906 |
| 4 | [SOL Group](https://www.tamtam.ai/c/sol-group) (solgroup.com)<br>Italian multinational company specializing in production, research, and sale of gases, home care services, biotech products, and renewable energy, listed on Milan Stock Exchange | Chemical Manufacturing | 🇮🇹 Monza | 2,188 | 1927 |
| 5 | [Fedrigoni Group](https://www.tamtam.ai/c/fedrigoni-group) (fedrigoni.com)<br>Specializing in premium specialty papers for packaging, labels, printing, and more, with a focus on innovation, sustainability, and creativity worldwide | Paper and Forest Product Manufacturing | 🇮🇹 Milan | 2,073 | 1888 |
| 6 | [Olon](https://www.tamtam.ai/c/olon) (olonspa.com)<br>Global leader in developing and producing active pharmaceutical ingredients for CDMO and generics, offering chemical synthesis and biological processing services with extensive expertise and reliability | Chemical Manufacturing | 🇮🇹 Milan | 1,709 | 2003 |
| 7 | [Polynt Group](https://www.tamtam.ai/c/polynt-group) (polynt.com)<br>A global chemical company specializing in the production, sales, and development of organic anhydrides, composites, coating resins, and other specialty chemicals | Chemical Manufacturing | 🇮🇹 Scanzorosciate | 1,693 | 1955 |
| 8 | [The SIAD Group](https://www.tamtam.ai/c/the-siad-group) (thesiadgroup.com)<br>A leading Italian chemical group offering industrial gases, engineering services, healthcare facilities, LPG and natural gas distribution, environmental management, and energy solutions | Chemical Manufacturing | 🇮🇹 Bergamo | 1,559 | 1927 |
| 9 | [Sapio Group](https://www.tamtam.ai/c/sapio-group) (grupposapio.it)<br>Industrial and medical gases, high-tech systems for cutting, welding, refrigerating gases, and pipeline design, plus hospital and home health services. | Chemical Manufacturing | 🇮🇹 Monza | 1,349 | 1922 |
| 10 | [De Nora](https://www.tamtam.ai/c/de-nora) (denora.com)<br>A multinational company specializing in electrochemistry and sustainable technologies, leading in industrial green hydrogen production, water treatment, and energy efficiency optimization | Industrial Machinery Manufacturing | 🇮🇹 Milan | 1,267 | 1923 |
| 11 | [Riva Group](https://www.tamtam.ai/c/riva-group) (rivagroup.com)<br>A leading group specializing in manufacturing long steel products using electric arc steelworks, focusing on sustainability, innovation, and quality | Primary Metal Manufacturing | 🇮🇹 Milan | 1,137 |  |
| 12 | [Lamberti](https://www.tamtam.ai/c/lamberti) (lamberti.com)<br>Specialty chemicals B2B company developing and industrializing chemicals for various industries, with a focus on research and innovation in multiple geographical areas | Chemical Manufacturing | 🇮🇹 Gallarate | 1,119 | 1911 |
| 13 | [Italcementi](https://www.tamtam.ai/c/italcementi) (heidelbergmaterials.it)<br>Production of cement and concrete products with a focus on sustainability, innovation, and extensive industrial infrastructure in Italy. | Wholesale Building Materials | 🇮🇹 Bergamo | 1,015 | 1864 |
| 14 | [RadiciGroup](https://www.tamtam.ai/c/radicigroup) (radicigroup.com)<br>A global leader in chemical intermediates, polymers, plastics, fibers, and nonwovens with a strong focus on innovation, quality, and sustainability | Manufacturing | 🇮🇹 Gandino | 797 |  |
| 15 | [Egal Srl Unipersonale](https://www.tamtam.ai/c/egal-srl-unipersonale) (egalsrl.com)<br>With over three generations of experience, this company is a leader in galvanic treatments on plastic, offering a variety of products and services to various industries | Metal Treatments | 🇮🇹 Origgio | 795 | 1958 |
| 16 | [SIAD S.p.A.](https://www.tamtam.ai/c/siad-s-p-a) (siad.com)<br>Italian chemical group providing technical gases, engineering services, healthcare solutions, LPG and natural gas distribution, as well as environmental management and industrial goods | Chemical Manufacturing | 🇮🇹 Bergamo | 612 | 1927 |
| 17 | [COIM Group](https://www.tamtam.ai/c/coim-group) (coimgroup.com)<br>An Italian company specializing in chemical specialties like polyesters, polyurethanes, and specialty resins for coatings and composites globally Passionate about quality and sustainability | Chemical Manufacturing | 🇮🇹 Offanengo | 549 | 1962 |
| 18 | [SAES](https://www.tamtam.ai/c/saes) (saesgetters.com)<br>SAES Group produces advanced functional materials for various industries, with a focus on innovation and technological excellence supported by global resources | Appliances, Electrical, and Electronics Manufacturing | 🇮🇹 Lainate | 520 |  |
| 19 | [Saint-Gobain Italia](https://www.tamtam.ai/c/saint-gobain-italia) (saint-gobain.it)<br>Global leader in sustainable construction materials, providing comfort and safety in buildings, transportation, and infrastructure while addressing resource efficiency and climate change challenges | Wholesale Building Materials | 🇮🇹 Milan | 517 | 1665 |
| 20 | [Indena](https://www.tamtam.ai/c/indena) (indena.com)<br>Identifies, develops, produces high-quality plant-derived active principles for pharmaceutical and health-food industries. | Pharmaceutical Manufacturing | 🇮🇹 Milan | 508 | 1921 |
| 21 | [SAATI](https://www.tamtam.ai/c/saati) (saati.com)<br>A multinational corporation specializing in woven fabrics and chemical technologies for screen printing, filtration, and ballistic protection, offering customized solutions with in-house production | Manufacturing | 🇮🇹 Appiano Gentile | 503 | 1935 |
| 22 | [Lechler Spa](https://www.tamtam.ai/c/lechler-spa) (lechler.eu)<br>Production and innovation of paint products for industry, refinish, decorative, yachting, and habitat sectors with strong research focus. | Chemical Manufacturing | 🇮🇹 Como | 407 | 1858 |
| 23 | [Dipharma Francis S.r.l](https://www.tamtam.ai/c/dipharma-francis-s-r-l) (dipharma.com)<br>Global CDMO specializing in manufacturing Active Pharmaceutical Ingredients and Intermediates for top pharmaceutical companies worldwide with core technologies in various chemical processes | Pharmaceutical Manufacturing | 🇮🇹 Baranzate | 352 | 1949 |
| 24 | [Heidelberg Materials Italia](https://www.tamtam.ai/c/heidelberg-materials-italia) (heidelbergmaterials.it)<br>Italian company with over 150 years of history specializing in cement production, shaping the past, present, and future of the industry in Italy | Construction | 🇮🇹 Peschiera | 349 | 1864 |
| 25 | [Alcantara S.p.A.](https://www.tamtam.ai/c/alcantara-s-p-a) (alcantara.com)<br>A leading Italian company specializing in innovative, sustainable materials for fashion, automotive, interior design, and consumer electronics industries since 1972 | Retail Luxury Goods and Jewelry | 🇮🇹 Milan | 344 | 1972 |
| 26 | [Nippon Gases Italia](https://www.tamtam.ai/c/nippon-gases-italia) (nippongases.com)<br>A leading Italian company specializing in the production and distribution of industrial gases, providing essential support to various industrial sectors with high-value solutions | Chemical Manufacturing | 🇮🇹 Milan | 329 | 1920 |
| 27 | [Calcestruzzi](https://www.tamtam.ai/c/calcestruzzi) (heidelbergmaterials.it)<br>Leading provider of precast concrete in Italy, focusing on sustainable architecture Offering innovative solutions to the building community for market leadership in innovation | Construction | 🇮🇹 Bergamo | 318 |  |
| 28 | [Farmol](https://www.tamtam.ai/c/farmol) (farmol.com)<br>A leading European company in cosmetics and homecare industries, offering contract manufacturing services since 1946 | Chemical Manufacturing | 🇮🇹 Comun Nuovo | 315 | 1946 |
| 29 | [ITELYUM](https://www.tamtam.ai/c/itelyum) (itelyum.com)<br>A leading European company specializing in regenerating used oils, producing high-quality lubricant bases, diesel, and asphalt through innovative patented technology | Environmental Services | 🇮🇹 Pieve Fissiraga | 309 | 1963 |
| 30 | [Oldrati Group](https://www.tamtam.ai/c/oldrati-group) (oldrati.com)<br>A leading international group producing rubber, plastic, and silicone products with 14 production sites, 1,700 employees, and 180 million euros in sales | Plastics and Rubber Product Manufacturing | 🇮🇹 Villongo | 292 | 1964 |
| 31 | [AEB Group](https://www.tamtam.ai/c/aeb-group) (aeb-group.com)<br>development and supply of biotechnological products, process treatments, hygiene, filtration, and cleaning solutions for beverage and food industries | Biotechnology Research | 🇮🇹 San Polo | 290 | 1963 |
| 32 | [Gruppo Riva](https://www.tamtam.ai/c/gruppo-riva) (rivaacciaio.com)<br>Leading European steel producer specializing in long steel products, operating multiple plants across Europe with high quality and environmental standards. | Primary Metal Manufacturing | 🇮🇹 Milan | 266 |  |
| 33 | [Timac Agro Italia S.p.A.](https://www.tamtam.ai/c/timac-agro-italia-s-p-a) (it.timacagro.com)<br>A leading Italian company in plant and animal nutrition, focusing on innovation, human capital, and agronomic solutions for maximum results while respecting the environment | Farming | 🇮🇹 Ripalta Arpina | 263 | 1991 |
| 34 | [LATI Benefit Corporation](https://www.tamtam.ai/c/lati-benefit-corporation) (lati.com)<br>European compounder specializing in hi-tech thermoplastics, offering over 2500 materials tailored to meet strict customer requirements, available worldwide | Plastics Manufacturing | 🇮🇹 Vedano Olona | 259 | 1943 |
| 35 | [Chemi SpA](https://www.tamtam.ai/c/chemi-spa) (chemi.com)<br>Italian company specializing in non-infringing process development and complex molecule characterization to support generic companies with innovative solutions for generic and parenteral products | Pharmaceutical Manufacturing | 🇮🇹 Cinisello Balsamo | 259 |  |
| 36 | [Regi Laboratories](https://www.tamtam.ai/c/regi-laboratories) (regi.it)<br>Global supplier in color cosmetics and skincare industry, with avant-garde R&D labs driving innovation for beauty B2B market worldwide | Personal Care Product Manufacturing | 🇮🇹 Bagnolo Cremasco | 258 | 1994 |
| 37 | [Bozzetto Group](https://www.tamtam.ai/c/bozzetto-group) (bozzetto-group.com)<br>A global group with a century of experience in textile, building, and performance chemicals, supported by modern production plants and dedicated employees | Chemical Manufacturing | 🇮🇹 Filago | 250 | 1919 |
| 38 | [SACCO SYSTEM](https://www.tamtam.ai/c/sacco-system) (saccosystem.com)<br>An international biotech company specializing in food, nutraceuticals, and pharmaceuticals, offering innovative products for food fermentation and nutritional supplements worldwide | Biotechnology Research | 🇮🇹 Cadorago | 230 | 2016 |
| 39 | [ORI Martin Group](https://www.tamtam.ai/c/ori-martin-group) (orimartin.com)<br>A European steel group founded in 1933, specializing in high-quality steel production for automotive, fastener, mechanical, and building industries | Primary Metal Manufacturing | 🇮🇹 Brescia | 229 | 1933 |
| 40 | [LOCATELLI](https://www.tamtam.ai/c/locatelli) (locatelliintonaci.it)<br>Innovative producer of construction products focused on quality, sustainability, and technological advancements for a constantly evolving market | Wholesale Building Materials | 🇮🇹 Ranica | 186 | 1976 |
| 41 | [Linde Gas Italia](https://www.tamtam.ai/c/linde-gas-italia) (linde.it)<br>A multinational leader in gas production for industry and healthcare, offering a wide range of gases and equipment for various applications worldwide | Chemical Manufacturing | 🇮🇹 Arluno | 177 | 1991 |
| 42 | [3V SIGMA](https://www.tamtam.ai/c/3v-sigma) (3vsigma.com)<br>Global producer of specialty chemicals with modern R&D, manufacturing facilities, and a multidisciplinary team providing innovative solutions, high quality, and competitive products. | Chemical Manufacturing | 🇮🇹 Bergamo | 128 | 1958 |
| 43 | [Nactarome](https://www.tamtam.ai/c/nactarome) (nactarome.com)<br>Creates and produces natural flavor, taste, and color solutions for the food and beverage industry, focusing on customer needs and sustainable ingredients. | Food and Beverage Manufacturing | 🇮🇹 Concorezzo | 105 |  |
| 44 | [JK GROUP](https://www.tamtam.ai/c/jk-group) (j-k-group.com)<br>A part of Dover Industries Italy, we develop eco-friendly digital inks for textiles & flexible substrates, offering safe, sustainable solutions | Chemical Manufacturing | 🇮🇹 Guanzate | 103 | 2015 |
| 45 | [Sipcam Italia](https://www.tamtam.ai/c/sipcam-italia) (sipcam.com)<br>The company specializes in agricultural solutions, offering innovative pesticides, fertilizers, and seed products for a wide range of crops | Farming | 🇮🇹 Pero | 102 | 1946 |
| 46 | [JRS Silvateam Ingredients S.r.l.](https://www.tamtam.ai/c/jrs-silvateam-ingredients-s-r-l) (silvateam.com)<br>Specializing in pectin and texturizing systems production, this joint venture focuses on developing vegetable-based solutions to meet demand for label-friendly ingredients | Food and Beverage Manufacturing | 🇮🇹 Bergamo | 100 | 2008 |
| 47 | [Sharon Personal Care](https://www.tamtam.ai/c/sharon-personal-care) (sharonpc.com)<br>A global supplier of ingredient solutions for personal care products, specializing in preservatives, functional ingredients, and bio-actives for innovative and sustainable formulations | Chemical Manufacturing | 🇮🇹 Trezzo sull'Adda | 99 | 1977 |
| 48 | [PLAX GROUP](https://www.tamtam.ai/c/plax-group) (plax.it)<br>Specializes in designing and manufacturing complex, high-quality plastic parts for B2B clients, with international presence and biomedical sector focus. | Plastics Manufacturing | 🇮🇹 Trezzo sull'Adda | 94 | 1958 |
| 49 | [FertiGlobal](https://www.tamtam.ai/c/fertiglobal) (fertiglobal.com)<br>A global leader in innovative plant nutrition solutions, committed to research and development for healthy plant growth and sustainable agriculture | Farming | 🇮🇹 Milan | 84 | 2003 |
| 50 | [Sinerga SpA](https://www.tamtam.ai/c/sinerga-spa) (sinerga.it)<br>Offers cosmetic specialties, R&D, contract manufacturing for dermo-cosmetic products, and product marketing support, collaborating with industry experts globally. | Personal Care Product Manufacturing | 🇮🇹 Gorla Maggiore | 81 | 1978 |

## 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 Lombardy

- [The largest companies in Lombardy](https://www.tamtam.ai/l/largest-companies-lombardy) (3,376)
- [Multinational companies in Lombardy](https://www.tamtam.ai/l/multinational-companies-lombardy) (889)
- [Manufacturers in Lombardy](https://www.tamtam.ai/l/manufacturers-lombardy) (512)
- [Companies with in-house R&D in Lombardy](https://www.tamtam.ai/l/r-and-d-companies-lombardy) (432)
- [Retail chains in Lombardy](https://www.tamtam.ai/l/retail-chains-lombardy) (429)
- [Financial services firms in Lombardy](https://www.tamtam.ai/l/financial-services-firms-lombardy) (262)
- [Corporate groups and holding companies in Lombardy](https://www.tamtam.ai/l/holding-companies-lombardy) (224)
- [Hardware manufacturers in Lombardy](https://www.tamtam.ai/l/hardware-companies-lombardy) (216)
- [Critical infrastructure operators in Lombardy](https://www.tamtam.ai/l/critical-infrastructure-operators-lombardy) (205)
- [IT services companies in Lombardy](https://www.tamtam.ai/l/it-services-companies-lombardy) (180)
- [Family-owned companies in Lombardy](https://www.tamtam.ai/l/family-owned-companies-lombardy) (171)
- [Consumer goods companies in Lombardy](https://www.tamtam.ai/l/consumer-goods-companies-lombardy) (168)
- [Retail Apparel and Fashion companies in Lombardy](https://www.tamtam.ai/l/retail-apparel-and-fashion-companies-lombardy) (167)
- [Professional services firms in Lombardy](https://www.tamtam.ai/l/professional-services-firms-lombardy) (162)
- [Luxury brands in Lombardy](https://www.tamtam.ai/l/luxury-brands-lombardy) (158)
- [IT Services and IT Consulting companies in Lombardy](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-lombardy) (155)
- [Software Development companies in Lombardy](https://www.tamtam.ai/l/software-development-companies-lombardy) (155)
- [Financial Services companies in Lombardy](https://www.tamtam.ai/l/financial-services-companies-lombardy) (154)
- [E-commerce companies in Lombardy](https://www.tamtam.ai/l/ecommerce-companies-lombardy) (150)
- [Companies with a mobile app in Lombardy](https://www.tamtam.ai/l/companies-with-mobile-app-lombardy) (137)
- [Personal Care Product Manufacturing companies in Lombardy](https://www.tamtam.ai/l/personal-care-product-manufacturing-companies-lombardy) (137)
- [Transportation, Logistics, Supply Chain and Storage companies in Lombardy](https://www.tamtam.ai/l/transportation-logistics-supply-chain-and-storage-companies-lombardy) (135)
- [Consulting firms in Lombardy](https://www.tamtam.ai/l/consulting-firms-lombardy) (134)
- [SaaS companies in Lombardy](https://www.tamtam.ai/l/saas-companies-lombardy) (125)

## The same list elsewhere in Italy

- [Chemical companies in Italy](https://www.tamtam.ai/l/chemical-companies-italy) (204)
- [Chemical companies in Emilia-Romagna](https://www.tamtam.ai/l/chemical-companies-emilia-romagna) (27)

## The same list elsewhere

- [Chemical companies in the world](https://www.tamtam.ai/l/chemical-companies-in-the-world) (6,503)
- [Chemical companies in Europe](https://www.tamtam.ai/l/chemical-companies-in-europe) (3,081)

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Source: https://www.tamtam.ai/l/chemical-companies-lombardy