This Young Shine Blue sponge rubber is developed by GUO YAN ( CHINA NATIONAL TEAM COACH ) . There are many positive comment , After give to some on China national team player tiral . The spin and speed are close to professional hurricane 3 rubber.
2.1mm 39 ,40 ,41 degree available.
China national player trial video click here
http://m.youku.com/v_show/id_XNDc0NDAyMDUwOA==.html?pgcpgcid=UMTg0NTAwMDA2OA%3D%3D&sharekey=b989d0e3e49a7e25bcc31cec3daed37a1
Way to use :
one layer booster on sponge first , then 3-4 layers of water based glue , then one layer booster on glue.
