Traditional Culture Encyclopedia - Photography and portraiture - What goods have high gross profit?

What goods have high gross profit?

When I was an intern in an accounting firm, I went to some company audits, which were basically high profits.

Wedding companies, software companies, medical equipment (those things that make teeth) and clothing (outdoor products) are all companies I have been to. I have read the profit account book, but I don't know much about others. In addition, the profits of the glasses industry are generally high, and the profits of jewelry, cosmetics and toys are more than several times.