How can I stop receiving newsletters or commercial letters?

In order to stop receiving newsletters, unsubscribe the newsletter registration.
 
How to do it

  1. Click 'unsubscribe newsletter' at the end of the email.
  2. Check the confirmation box.
  3. Click 'Update' preferences. 

Next you won't receive our newsletter or commercial letters any more. Required process can take up to one week, during this week you may still receive newsletters or commercial letters.