- Cey-Nor Foundation
- Address:335, D. R. Wijeywardena Mawatha,
- Isin
- Address:
- Sinetro Holdings (Pvt) Ltd
- Address:Hjgh Level Road
- TIME (Pvt) Ltd
- Address:167 Koswatta Road
- Imexma Minerals ( Pvt) Ltd
- Address:Diganatenne Estate, Karaliyadde Rd, Digana, Central, Other, Sri Lanka
- Godagama
- Address:422, Galle road,, colombo 3, western, Sri Lanka
- Ceyquartz MBI (Pvt) Ltd
- Address:PO Box 01, Kumbiyangahaela
- Multi Steel Company
- Address:5, Abdul Jabbar Mawatha
- World Wide Lanka Express Co.LTD
- Address:71 / 1 Galahiteyawa Roas
- Blue bay minerals
- Address:263, praketawella, pilimathalawa
- Galaha Silica
- Address:11 Moreau Mews, APPLECROSS, Perth, Western Australia, Australia
- Viskam Brothers pvt ltd
- Address:312 / 1 Kcyril C perera Mw
- Duminda Enterprises
- Address:349 Old Moor Street Colombo 12
- Asian Investments & Mercantile Services (Pvt) Ltd.
- Address:No: 10, Gurupura, Rideepana
- Peraj Mining (pvt) Ltd
- Address:Sri Lanka
- Mica Lanka
- Address:Rajapihilla Mawatha
- SyreX Holdings Ltd
- Address:502/15, Halbarawa Gardens, Thalahena, Malabe, Sri Lanka Malabe Colombo Sri Lanka
- union metal
- Address:159, 2 / 1, mahavidyalaya mawathe,
- K. K. Serendib
- Address:17/2,3rd Lane Ambillawatte Rd Boralasgamuwa
- Bogala Graphite
- Address: