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| Ambro
Electrical 88/5, 1st Cross Street, Colombo 11. |
| Jayanthi
Electrical 51, Maliban Street, Colombo 11. |
| Bio-Tech
Engineering Services 316A, Katugastota Road, Kandy. |
| Engineering
Management: Negombo Road, Malkaduwawa, Kurunegala. |
| Daj
Engineering Malkaduwawa, Kurunegala. |
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