GFO (Green Fire Ball) Automatic Fire Safety Ball for Office School Warehouse Home | FIRE Extinguisher Ball.  Description :-Cutting Oxygen And Blanketing MethodFast Reaction , Eco-friendly , 3-10 Sec Activation TimeApproved By India Govt. and Tested By National Test House(Nth)Place We Can Use It School, Malls, Factories, Hospitals, And For All Types Of Industrial, Domestic And Commercial Use.1