Long and short sleeve shirts importing Montenegro Karadağ

I am looking for local producers to help us create m***h/s**** for our event Z******* that will be taking place in Istanbul 29/10-12/11/2023.
The idea is to get 300 shirts. Half long sleeve and half short sleeve.
White: S*20, M*25, L*20, XL*10
Black: S*20, M*25, L*20, XL*10
Grey: S*20, M*25, L*20, XL*10
Green: S*20, M*25, L*20, XL*10
Deadline: 29.10.2023.