1）指定的code赢指定的奖品 / The prize can be set before giving to customer 
2）snooker球随时可以换 / Snooker ball can be changed anytime 
3）奖品自由更换 / Prizes are free to change. 
4）Database可以看什么code赢了什么奖品 / The database can see what codes have won what prizes. 
5)   我们有提供免费弄voucher code给顾客 / We have provided free voucher code to customers. 
6）每一个voucher code都是random字眼，顾客不容易猜到 / Each promo code is a random word / number, which is not easy for customers to guess. 
7）一个voucher code只能玩一次 / One promo code can only be played once.