Stressfree

1   weight 6 ping pongs with another 6 ping pongs. see which side is heavier公仔箱論壇- S6 n( X7 \! o+ A+ Q4 W4 S
2   spilt the heavier side ping pongs in half and weight against each other
, G, N& O/ o3 QTVBNOW 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.