| Contact Person | Name:Ratan Kanti Das |
| Designation:Chairman | |
| Phone:1199702486 | |
| Email:hallmark@click-online.com | |
| Mailling Address | Mohal Shopping Complex (3rd Floor), 291, Loyal Road, Laldighi WestChittagong |
| Phone | 31622469 |
| hallmark@click-online.com | |
| Factory Address | Mohal Shopping Complex (3rd Floor), 291, Loyal RoadChittagongLaldhighi |
| Phone | 31622469 |