The Factory is the base of operations of Clyde and his gang.
Selina Kyle had a history with Clyde, he was her main fence during her time as a burglar.
Bruce Wayne and Selina tried to sell some valuable trinkets that were Bruce's, but Clyde attempted to swindle them to no avail. The couple was locked up in a room, waiting for Larissa Diaz and her assassins. Jim Gordon and Alfred Pennyworth arrived just in time and shot dead the assassins except for Larissa herself, who escaped.