While 3TG Brokers might offer online trading in Serbia, 
we do not recommend trading there. It is not one of the best rated Serbia Forex broker, with a rating of 1.0/10. We do not suggest trading at any site rated lower than 7.5, because there are much better forex trading alternatives available for Serbs.
Currently our best Forex broker in Serbia is: 
FP Markets. If you are searching for an alternative to 3TG Brokers you should start there. To see all of the best brokers available for you, see our list: 
Forex Trading Serbia. If you'd like to visit 3TG Brokers anyway, 
www.3tgbrokers.com is their website.