The process is very simple. You prepare the materials, submit them and wait for the review. The Food and Drug Administration will go to the site for verification, and wait for the certificate if it passes.

the most troublesome thing is the required information and whether the address meets the specifications!

if you find it troublesome to apply, I suggest you choose an agency, so that you can apply for it in a faster time and then start business. Generally speaking, agencies will run faster than themselves, because they are familiar with the application process and their wide connections will speed up the processing.