| Contact Person | Name:Mazharul Islam Chowdhury |
| Designation:Managing Director | |
| Phone:1711762001 | |
| Email:das@colbd.com | |
| Mailling Address | ABM Tower, 671/1, SholakbaharChittagongBahaddarhat |
| Phone | 31651856 |
| Fax | 31656218 |
| das@colbd.com | |
| Factory Address | 671/1, Sholakbahar, ABM TowerChittagongBahardarhat |
| Phone | 312551955 |
| Fax | 31656218 |
