This is a picture of what is written on a Palio 531A "Yellow Edition" :
http://www.ittf.com/ittf_equipment/R...pany=&s_Type=& , and it seems that it's the same on the "Blue Edition", so the 2 versions seem to be authorised, even if the BE is "prepared", or "treated", or "processed" (sorry, but I can't find other words in my french-english dictionary
). So the question is : can an umpire or a referee refuse a BE, because it's more smooth and shiny than the YE, and because that's the only way to recognise it? :confused: