This is simple A/C gas,,, R134A in a catchy bottle saying "Ultra Synthetic".. This comes in these small cans for topups in case of minor undetectable leakage..
Get gas filled from a reputed A/C service centre , they would also fill genuine gas i.e Made is USA or soo... There are alot of qualities in A/C gas (Refridgerent). If you dont trust the A/C workshop you can yourself buy USA made Gas and get it filled in your car. In Lahore, there is this shop in the basement of the plaza where there is SHEZAN at Garhi Shahu.. Take empty cylinder with you and they fill it with your desired quality and quantity..
Obviously the better quality Gas you fill, would give better cooling!!!