Question about work viza with a prior criminal record in the us

Hello, I may have to travel to China for work. My employer sends people to China all of the time and it goes smoothly. However, I have a felony from about 15 years ago, when I was young. I have since obtained a degree etc., but I worry this may bar entry to China. Do you know what the policy is as far as people who must list on the application they have a criminal record?

Thank you in advance