Thank you for using China Telecom.
According to your description, you can apply for changing the package directly in the online business hall. You need to provide the identity certificate of the owner to change the bag. Since your car owner is a company, you need to provide a certificate issued by the company to handle it.
Anhui Telecom will serve you wholeheartedly, and I hope my answer can be adopted by you.
If in doubt, please consult the staff of Anhui Telecom's online business hall. Anhui Telecom has officially opened the pre-sale of Redmi 1s and Xiaomi 3 telecom versions. You can check the details in the online business hall. I wish you a happy life!