The service fee of 280 yuan is invoiced through the tax control panel insertion system. Generally speaking, it is the Nuo Nuo billing system. 300 yuan's service fee is generally a network billing system such as cloud ticket system.

The online version of the billing system has some logins that need to be checked in the UK, and some that don't need to be inserted in the UK. This is just a service charge. If you buy tax plates or UK separately, you need to pay extra.