Don’t go to advertising agencies, they will kill you. Find a place that does screen printing, preferably a small workshop. If it's cheap, it costs 50 yuan per printing plate, and the printing fee will depend on the quantity. It's not expensive. If you can’t make the version yourself, you can print it yourself.

Supplement: Screen printing is done only after the finished product is packaged. You should go to a factory that specializes in screen printing. Your box is so small and the cost is very low. Just take your logo and let them print it for you very quickly. If you really want to seal it, just engrave it.