Penta Guardian Systems (Pvt) Ltd
No 247 Highlevel Rd Kirulapone
0114886966, 0112812222, 0112817731, 0112817732, 0112817733
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Certis Lanka Technology & Consultancy (Pvt) Ltd
No 08 Ohliums Place Colombo 08
0112557777, 0777530200, 0112667788
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Hemsons International (Pte) Ltd (Telecom Division)
Hemas Building 36 Sir Razik Fareed Mw Colombo 01
0112327948
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Metropolitan Communications Ltd
85 Braybrooke Place Colombo 02
0112437797, 0114700200, 0114700300, 0112437624, 0112437626
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