Why do not all activities can be issued coupons presented to Happybuy friends?

Issued for the e-coupons can only be activated to receive the current user, while the activities of coupons issued with the following two situation:

 

1.one is limited to the current user active use;

 

2. the other is the current user is activated, you can can also be presented to Happybuy friends to use.

 

According to each activity is different, Will Insued the different Value Coupons.

 

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