Hello
I am togolese living in Ukraine with Ukrainian residency certificate. I would like to visit my friend in ShangHai. I would like to apply for multi-entry visa with 12month validity. It is clear that my friend must send invitation letter to me. My question, is the following: is it possible that my friend writte the letter himself with all needed data in the invitation and send to me, or he needs to go through any local, or official office to validate the invitation. Thank you for your help.