It’s difficult to say really. If the factory is using baidu drive (or whatever it is called - the Chinese version of Google Drive), Google Chrome will always flag the site as hosting malicious code even it isn’t. I’ve had to download a file from there before and was forced to use Internet Explorer (it was a firmware file for a device so no risk of malware).
Definitely if you need to enable Chinese support on a printer, you need the tools to change the code page of the printer. However, this is a printer setting and will have nothing to do with how you connect to the printer (network or USB / shared printer).
I have found in the past trying to enable Chinese support on printers doesn’t work as expected - I have enabled it then found some other needed characters are missing in the Chinese font. For example, in the UK, we use £ for the currency, but the £ symbol is missing from the Chinese character set.
When I need to use Chinese for a client, I just use Document Printer in V5 and bypass all the hassle with the printer. Yes, it’s a bit more effort to setup the printer templates, but also you get a lot more flexible formatting options so it’s worth a look.
Read the section titled “Advanced Ticket Print Templating format” in the first post on this topic: