What Rubber is This?

I was hoping somebody could tell me what rubber i got.

I bought this rubber in a small sports shop in China this summer.

The package marks the price at 36rmb, and comes with 2 black rubbers with blue sponge.

The actual rubber is marked RITC 729. (but i don't think it's actually the classic 729 cause of the cheap price and blue sponge)

The package says "sticky, light, general sponge rubber", as well as "High viscosity and light weight to rubber, friction coefficient big, for CROSS sponge rubber, the loop drive speed and the strength obtain the large scale promotion, it is ideal for table tennis players who apply loop drive with fast attack".

The package lists speed = 9, spin = 10, control = 9, forward = 9.

Anybody know what rubber this is and why it's so cheap?

zhuangcorp wrote: I was hoping somebody could tell me what rubber i got. I bought this rubber in a small sports shop in China this summer. The package marks the price at 36rmb, and comes with 2 black rubbers with blue sponge. The actual rubber is marked RITC 729. (but i don't think it's actually the classic 729 cause of the cheap price and blue sponge) The package says "sticky, light, general sponge rubber", as well as "High viscosity and light weight to rubber, friction coefficient big, for CROSS sponge rubber, the loop drive speed and the strength obtain the large scale promotion, it is ideal for table tennis players who apply loop drive with fast attack". The package lists speed = 9, spin = 10, control = 9, forward = 9. Anybody know what rubber this is and why it's so cheap?

May be 729 FX with blue sponge?

it's probably one of the 729 SST Cross variants..
why are you so interested in the rubber? is it any good?