The information needed is mainly: name, passport number, position and salary. Generally, a vacation certificate is required, which can show that the vacation during the business trip has been approved by the company. Here is a template for reference:

This is to certify that Ms. * * * * (passport number: * * * *) has been a full-time employee of * * * since * * *. Her current position is * * *, and her total monthly salary is * * * * yuan.

This is to certify that Ms. * *, passport number: * *, was born in.

He joined * * Company on, with a monthly pre-tax income of RMB.

We hope this information will be useful for you to issue her a visa. If you need any further information, please feel free to contact me at * * * * * * *.