I am not from Xuzhou, but I can provide some suggestions when looking for an agency.

The first step is to get to know the names of several agencies and make a list of inspections.

Web link

Check on the website of the above State Intellectual Property Office to see if it has patent agency qualifications and trademark agency registration?

Of course, there are also scum companies among registered institutions, but they are definitely more reliable than companies without qualifications.

The second step is to select qualified companies.

2-3 companies, go to the company for on-site visits.

Look at the professionalism of the front desk and the professionalism of the agent.

Talk to them more, and when choosing an agency, choose someone who is genuine!