Taiwan Province Immigration Bureau can send the entry permit to the mainland in a few days. Was there a delay on the way? Can you ask a friend in Taiwan Province Province to answer it for you?

There is a misunderstanding about the topic ~(50 points is unnecessary ~ anyway, they are all enthusiastic to help here, hehe, anonymity won't help ~)

The entry permit will be sent by the travel agency to the company by mail or fax, and will be sent back to the travel agency for printing within 1~2 working days.

Generally, it is not handled by sending it back and forth.