Stressfree

1   weight 6 ping pongs with another 6 ping pongs. see which side is heavier公仔箱論壇, K/ l! s% G! x" V
2   spilt the heavier side ping pongs in half and weight against each other
& P0 k% X- b: B/ b5 NTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。3   weiht either ping pongs one on one then you will know which is the heavy one.