The application of drying equipment in petrochemical enterprises is very common and serves petrochemical enterprises, so it is greatly affected by the industry economy. The overall economic operation of the petrochemical industry is not optimistic, which is a challenge to the drying equipment industry. It is the small enterprises that have really been hit harder, and the large enterprises have not been greatly affected, and some large enterprises have only shrunk their profit margins a little, and their output value has not declined. This shows that the ability of large enterprises to resist shocks is much stronger than that of small enterprises.