GKI Euro Jumbo Table Tennis Rubber

I usually play with Euro XX but this time i planned for Jumbo.It's up to my expectation. It has really good control with average Spin.

It is very good rubber for counter drive

rubbon quality received is not good.

Bought in Amazon and started playing with three months ago and it lost its tackiness near the finger contact region as highlighted in the picture. A friend of mine who bought in a store more than a year ago has still looks good and no loss of tackiness anywhere. I getting a feel that the one I have is not a genuine product.