These Kolkata-based companies with in-house R&D are primarily large, established firms in manufacturing and heavy industry. Many were founded in the mid-20th century. Exide Industries Limited manufactures lead-acid storage batteries, while Century Plyboards (I) Limited produces plywood and laminates. SKIPPER LIMITED specializes in Transmission & Distribution Structures, and Coal India Limited is a state-owned coal mining corporation. Vikram Solar manufactures solar modules, and PCBL Chemical is a carbon black manufacturer.
A notable pattern among these companies is their strong presence in traditional industrial sectors like manufacturing, mining, and construction. There is also a significant representation of companies involved in infrastructure and specialized engineering, such as Bridge and Roof Company (India) Limited and Titagarh, which manufactures railway rolling stock. The majority of these firms have a long operational history, many established before the 2000s, indicating a mature industrial base.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Exide Industries Limitedexideindustries.com
A leading brand in India for over 70 years, specializing in manufacturing a wide range of lead-acid storage batteries for various industries globally |
7,296 | |||
| 2 |
Century Plyboards (I) Limitedcenturyply.com
Leading manufacturer of plywood, block boards, doors, laminates, and veneers in India, setting new standards in the decoratives industry since 1986 |
3,646 | |||
| 3 |
SKIPPER LIMITEDskipperlimited.com
Leading manufacturer of Transmission & Distribution Structures, PVC Pipes & Fittings Top 3 in India, top 10 in the world, with global market reach in 45+ countries |
2,647 | |||
| 4 |
Coal India Limitedcoalindia.in
A leading state-owned coal mining corporation in India with the largest coal production in the world and diverse subsidiary operations |
2,498 | |||
| 5 |
ICA Edu Skillsicajobguarantee.com
India's leading vocational training institute specializing in Computerised Accounting, offering job-oriented courses in Finance and Taxation with practical training and high placement rates |
2,370 | |||
| 6 |
Vikram Solarvikramsolar.com
A leading solar module manufacturer and integrated energy solutions provider, offering EPC and O&M services globally with a focus on high efficiency PV modules |
2,081 | |||
| 7 |
Bridge and Roof Company (India) Limitedbridgeroof.co.in
A multi-disciplinary engineering and construction organization with extensive experience serving major project implementation authorities in India, with high expertise and in-house resources |
1,989 | |||
| 8 |
Ramkrishna Forgings Limitedramkrishnaforgings.com
A global leader in the forging industry, promoting innovation, sustainable growth, and social responsibility with operations in multiple countries |
1,887 | |||
| 9 |
PCBL Chemicalpcblltd.com
A leading carbon black manufacturer with over 60 years of experience, operating in India and globally with state-of-the-art production plants and research centers |
1,731 | |||
| 10 |
Titagarhtitagarh.in
A leading Indian manufacturer of railway passenger and freight rolling stock, with global presence spanning India, Italy, and France Specializing in specialized engineering equipment |
1,556 | |||
| 11 |
Paharpur Cooling Towerspaharpur.com
Global leader in process cooling equipment manufacturing with over 70 years of experience, offering custom solutions for industries worldwide |
1,523 | |||
| 12 |
Usha Martin Limitedushamartin.com
Leading manufacturer of steel wire rope & related products for various industries worldwide, providing high-performance solutions through state-of-the-art facilities and global service centers |
1,516 | |||
| 13 |
M. N. Dastur & Co. (P) Ltd.dastur.com
A pioneering engineering consultancy with a global reputation offering integrated design and engineering services for projects across industries worldwide |
1,281 | |||
| 14 |
Himadri Speciality Chemical Ltd.himadri.com
Leading specialty chemical company specializing in carbon products, with a focus on innovation, R&D, and vertical integration to cater to global industry needs |
1,136 | |||
| 15 |
Tega Industriestegaindustries.com
A global leader in heavy-duty engineering products for mining and material handling industries, with over 47 years of experience and a worldwide presence |
1,082 | |||
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. | |||||
| 16 |
TCG Lifesciences Pvt Ltd.tcgls.com
Global Contract Research and CDMO providing innovative R&D services in pharmaceutical, biotech sectors Specializing in chemistry synthesis, pharmacology, DMPK, and analytical development |
1,079 | |||
| 17 |
LUMINO INDUSTRIES LIMITEDluminoindustries.com
Manufacturer of overhead transmission line conductors and AB cables, also offering Engineering Procurement Construction services for last-mile electricity distribution in India |
838 | |||
| 18 |
Coal India Limitedcoalindia.in
A state-owned coal mining corporation in India, CIL is the largest coal producer globally with multiple subsidiaries and training institutes |
836 | |||
| 19 |
Tata Metalikstatasteel.com
A leading manufacturer of foundry grade Pig Iron and Ductile Iron Pipes, providing the latest updates on products and innovations |
809 | |||
| 20 |
TIL Limitedtilindia.in
Manufacturing high-quality material handling and infrastructure equipment with advanced R&D, serving diverse industries across India and maintaining global alliances. |
787 | |||
| 21 |
Veedolveedolindia.com
Leading manufacturer and marketer of quality lubricants in India, catering to automotive and industrial segments with a range of high performance engine oils, gear oils, transmission oils, and greases |
776 | |||
| 22 |
Aludecoraludecor.com
Manufacturer of high-quality coated and composite products using innovative technologies, eco-friendly materials, and stringent quality checks to meet international standards |
737 | |||
| 23 |
West Coast Paper Millswestcoastpaper.com
A leading paper producer in India, focused on innovation, sustainability, and quality, serving various industries with environmentally friendly products |
708 | |||
| 24 |
Lalbaba Engineeringlalbabagroup.com
Manufacturing group founded in 1964 specializing in pneumatic forging, fabrication, and supplying products to Indian Railways and OEMs |
601 | |||
| 25 |
Garden Reach Shipbuilders & Engineers Ltd.grse.in
A leading Indian warship building company under Ministry of Defence, specializing in building warships, platforms, engines, and engineering activities since 1884 |
591 | |||
| 26 |
Pan Seedspanseeds.in
Agricultural seed producer specializing in high-quality rice seeds, expanding into other crops and agriculture hand sprayers with a strong distribution network |
582 | |||
| 27 |
SRMB Steelsrmbsteel.com
A leading Indian reinforcement company with state-of-the-art production of TMT bars and sectional steel products, focused on meeting customer needs |
577 | |||
| 28 |
Jupiter International Limitedjil-jupiter.com
India-based solar power solutions company manufacturing high quality poly-crystalline solar cells with global standards Committed to quality, efficiency, and aggressive expansion in the industry |
543 | |||
| 29 |
Ion Exchange (India) Ltdionexchangeglobal.com
Specialists in water and environment management, providing total solutions for water treatment, waste water treatment, recycle, and zero liquid discharge |
517 | |||
| 30 |
WPILwpil.co.in
A multinational pumps and systems company with a focus on specialized pumping products, offering end-to-end EPC solutions for large water distribution systems |
454 | |||
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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 12, 2026.
More company lists in Kolkata
- The largest companies in Kolkata 594
- Manufacturers in Kolkata 115
- Multinational companies in Kolkata 66
- Education providers in Kolkata 65
- Publicly traded companies in Kolkata 55
- Retail chains in Kolkata 53
- Corporate groups and holding companies in Kolkata 49
- IT Services and IT Consulting companies in Kolkata 46
- Critical infrastructure operators in Kolkata 45
- Financial services firms in Kolkata 44
- Financial Services companies in Kolkata 36
- Energy companies in Kolkata 34
- Public sector organisations in Kolkata 34
- IT services companies in Kolkata 33
- Healthcare providers in Kolkata 31
- Education Administration Programs companies in Kolkata 27
- Higher Education companies in Kolkata 27
- Hospitals and Health Care companies in Kolkata 27
- Consumer goods companies in Kolkata 26
- Chemical companies in Kolkata 25
The same list elsewhere in India
- Companies with in-house R&D in India 1,990
- Companies with in-house R&D in Maharashtra 514
- Companies with in-house R&D in Karnataka 271
- Companies with in-house R&D in Tamil Nadu 226
- Companies with in-house R&D in Haryana 166
- Companies with in-house R&D in Gujarat 143
- Companies with in-house R&D in Uttar Pradesh 124
- Companies with in-house R&D in Telangana 69
- Companies with in-house R&D in West Bengal 54
- Companies with in-house R&D in Rajasthan 41
- Companies with in-house R&D in Andhra Pradesh 36
- Companies with in-house R&D in Kerala 36
- Companies with in-house R&D in Punjab 34
- Companies with in-house R&D in Mumbai 258
- Companies with in-house R&D in Bengaluru 235
- Companies with in-house R&D in Pune 149
- Companies with in-house R&D in Chennai 132
- Companies with in-house R&D in New Delhi 126
- Companies with in-house R&D in Gurugram 124
- Companies with in-house R&D in Noida 75
- Companies with in-house R&D in Hyderabad 72
- Companies with in-house R&D in Ahmedabad 57
- Companies with in-house R&D in Coimbatore 41
- Companies with in-house R&D in Vadodara 40