Is there an international body that can inspect my Chinese mfg for ethical working conditions and compensation?

I have a business that is growing and as such I have more resources to dedicate to improving the business.

I want to know if there is an international body I can pay to inspect my Chinese manufacturing partner as to how they treat and compensate their employees.

I have no idea where to even begin. I know this isn’t the exact right sub, but thought there may be some people here who may know.

If you don’t have any direct knowledge, if you know of a sub that may have info, that would be great.