Manufacturing enterprises, the target is not the general public, and online promotion, even if what big data is used to accurately promote user privacy now, the effect is not so good, but it is easy to cause users to resent and spend more money. What's more, data fraud is serious now, and who knows if online promotion will be like this. There are also various bidding rankings, which have no effect.

Offline promotion, such as Zhibo Fair, is highly targeted, and most of the visitors are competitors and target customers, which is very beneficial for manufacturers to compare products and attract potential customers.

There is also a question of thinking. Most manufacturing practitioners like to watch and touch, promote online, completely blind and can't play. In their view, it is enough to spend some money to maintain official website's bidding ranking. Offline exhibition is a real opportunity for peers to exchange and display products.