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We always expect an replay when we send a letter our. Reply helps us to improve the response rate.
When we use it to send a letter out, the receiver takes out the letter and rips off the previous information. You will get a new envelope. So that the receiver will be able to use this new envelope to write back. At the same time, it helps us to save half of the resources.


Han, Juncheng

Han, Juncheng
zhengzhou, China