Make your way to Carton King - Dakeng for a look into local industry. Sign up for a tour and see what is being made here, and perhaps more interestingly, exactly how they do it.
This manufacturing facility in Beitun District comes recommended by many travelers, so make a spot for it on your travel plans. However, don't end your sightseeing there. There are loads more attractions ready for you to appreciate after Carton King - Dakeng. National Museum of Natural Science, Taichung Park, and Paochueh Temple are close by.