In February 65438, I traveled from Tianjin to Singapore and brought an ipad for my own use. Is there any tax in China? Do I need to declare? If yes, what is the process?

You will take the receipt of the iPad you bought in China with you, and reserve more time when you leave Tianjin Airport. After the border inspection, you should voluntarily declare the iPad you brought out of China Customs. After you apply, you will be given a declaration form. Remember not to lose the declaration form. When you return home, if the customs finds you, you can show your declaration form when you leave the country, so that nothing will happen and you will not be taxed.