FRIENDSHIP "SUPER 729 FX" is one of the oldest Chinese rubber sheets. Super sticky rubber surface. Capable of generating strong spin. Excellent for consistent power players requiring more control. Orange sponge and better quality!
A rubber I have experimented with, it is one of those that literally grips the ball and imparts maximum spin. Unfortunately it requires a straight arm chinese style loop technique for maximum ultilization and in the end my technique prefers european or japanese topsheets and sponges. The spin on serves is amazing but of course, you have to be great at reading spin to return opponent's serves with this rubber. A double edged sword, but a good rubber for spin lovers.