First thing you’ll need to do is get a work permit from your company in Ningbo. Then you can use your work permit to apply for your Z Visa.
If you don’t have the job yet but you want to get to China first, you can apply for a business visa (class M) and then apply for a working visa (class Z) while you are in China. This is a bit more risky of a process but can still work in many cases.
You can also contact me on wechat and I can help you figure it out: azitowolf.