The Innerforce Layer ZLC CS is a Chinese Penhold blade which combines inner fiber construction with ZLC Carbon technology for a playing experience unlike other blades. A lot of thought has gone into creating the Innerforce Layer ZLC CS; the Carbon layers are placed closer to the core of the racket. This allows these layers to provide the soft balance they are known for while at the same time retaining the sharpness and tightness from the surface layers. What this translates into in-game are shots that have the satisfying power of a hard blade while having the control you usually get only from soft blades.
JTTAA stands for "Japanese Table Tennis Association Approved". Blades that are used in local and national tournaments in Japan must all be registered in the Japan Table Tennis Association. In the association they actually have crew to select blades in order to ensure the quality of the baldes, both imported or locally-made, are premium. Unqualified blades are not allowed to registered. So JTTAA is indeed a sign of quality, Japanese are so conscious in their effort of quality control.