| #1 | BETELCO |
| Address | : | 19 Kakrail, Dhaka 1000 |
| Contact | : | Phone: +880-2-8313326-7, 8314141, 8322201, Fax: +880-2-8316395 |
| Website | : | http://www.betelco.com |
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| #2 | Litma Enterprise |
| Address | : | 15 Senani Shopping Complex (B.A.F. Shaheen College), Dhaka Cantt., Dhaka 1206 |
| Contact | : | Phone: +880-2-8813184, 9881907, 01711-680073, Fax: +880-2-9881907 |
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| #3 | Tech Valley Computers Ltd. |
| Address | : | 139 Lake Circus, Kalabagan, Dhaka 1205 |
| Contact | : | Phone: +880-2-8116942, 9121463-4, Fax: +880-2-8116943 |
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| #4 | Unique Sound Systems |
| Address | : | 70 Maulana Vasani Stadium, Dhaka |
| Contact | : | Phone: +880-2-9566515, 8828377, Fax: +880-2-8823691 |
| Website | : | http://www.ubsbd.com |
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