I found that there are many people in the forum asking about if the Sunrise stickers of the rackets have been removed, will it affect something like losing the warranty of the racket or something else. So I sent an e-mail to Sunrise & Co (PTE) Ltd. to ask for the answer. Here is the reply:

"Hi,

Thank you for your email and for contacting us.

We appreciate your concerns and are pleased to confirm that if the Sunrise sticker is damaged, there is no effect on the Warranty, provided the racket is genuine and all other conditions such as having a receipt, the claim is within the warranty period etc are met......"

So, DON'T WORRY~