Customers will be able to choose from among 1,500 brands, including as many as 350 local ones, Tanjug reported.
"This is no ordinary day and no ordinary store - this is a day when we are making a great step forward towards better life," Serbian President Aleksandar Vucic said in Belgrade on Thursday.
"It's a platform for first responders to learn from each other in order to receive the real experiences together and to better prepare for times when we face life's emergency situations," Stoltenberg said in Mladenovac, near Belgrade, on Monday.
He thanked President Aleksandar Vucic for his personal contribution in order for this exercise to be realized.
According to a press release, during the visit Stoltenberg will meet with President Aleksandar Vucic and Prime Minister Ana Brnabic.
On October 8, Stoltenberg will join Vucic for the opening ceremony of the civil emergency exercise "Srbija 2018", co-organized by the NATO Euro-Atlantic Disaster Response Coordination Center (EADRCC) and the Serbian Ministry of Interior, NATO said.
Vucic stressed that they agreed on "every topic of discussion."
"We got everything that we looked for. We agreed on everything," he told TASS, adding that he "could not reveal the details."
The Russian agency quoted Vucic as saying that he thanked the Russian president for supporting Serbia's territorial integrity and sovereignty.