Not a principled choice, but requirements are:
- Close to two cities in BD with international connections, which are Dhaka, or Chattogram
- Have perks for electronics engineering/manufacturing
- Logistical availability, not middle of nowhere
- Close to educated labour. I guess, being near Dhaka, or Chattogram with some transit connectivity solves this automatically
- Being relatively big, and populous with other companies of that kind, so there is a chance the rest of the supply chain goes there
If you are looking for locating closer to electronics engineering/manufacturing hubs then locating closer to Dhaka would be a better choice. Air Cargo activity is also more concentrated in Dhaka I'd say.
Walton, Bangladesh' electronics manufacturing giant is located near the locality of Chandra in the area of Kaliakoir, part of Gazipur City. Gazipur is North of the industrial locality of Tongi which is North of Dhaka's Northern-most suburb, Uttara. If you want to steal some labor from them, that is an ideal place to be.
The Dhaka-Gazipur highway is unfortunately a mess right now - because they are building a Bus Rapid Transit as well as an expressway in that area and you will face some delay in getting through. However the closest EPZ in there is the Dhaka EPZ located in the locality of Savar.
That may be an ideal location for electronics assembly because there are educated labor located in that area, and given the relative proximity of Dhaka Airport close by, may be ideal for using airfreight to ship out assembled products. SGS operates in that area (global customs inspection agents).
The other hub of electronics assembly is going to be Narsingdi (still a remote area), which is also North of Dhaka, where Samsung has a smart TV assembly plant. Click below to see location (that whole area North of Dhaka has many export factories),
Narsingdi and Gazipur on a map
If you are primarily interested in Sea-Freight in containers as a logistics and supply chain (both inward and outward) option, then sitting closer to Chattogram EPZ's may be better, as the port is close by.
Chattogram boasts half a dozen VERY large EPZ's, more than half of them owned by the govt. - which contains electronics manufacturing facilities I understand.
However the largest EPZ in Asia is also being built in Mirsarai (still early days), which is a few dozen KM's North of Chattogram, on the DAC-CTG Highway. Educated electronics labor may be harder to find in this area, depending on level of education (compared to Dhaka where there is more availability of educated labor, but also salaries demanded may be a bit higher).
Drone video,
Last but not least - find a REPUTED local partner to team with to get past language barriers and who know the area well, there are shysters and fraudsters aplenty. But people who already have large investments in Bangladesh won't risk their reputation pulling fast ones on you. Again, go talk with the chambers of commerce in each city and make friends. If you are in Chittagong, go see Kihak Sung, president of Youngone Bangladesh, he owns most of the Korean EPZ in that area. He is also a very powerful man in Chottogram Industrial export circles.
The Ispahani family, PHP Family are also reputed conglomerates based in Chittagong, they all have varied industrial operations.