We had adopted the latest technologies in producing most standard and quality fridge magnet, which can compete with the International Standard Quality.
The thickness of flexible magnet, also known as rubber magnet, that we are using is 0.5mm. It is the most common used to produce the fridge magnet by the many countries like Australia where they are far more mature in manufacturing fridge magnet.
The magnetic power of fridge magnet definitely strong to hold tight on metal surface, as long as you can imagine and as long as you wish.