The casting machine has undergone three stages of transformation before developing to the current situation, mainly divided into the following three stages:

1. Initial stage

At this stage, the casting machines are mainly from abroad, and they are in a single-layer structure

2. Mid term stage

This stage is a very important transformation period for casting machines. At this time, China has begun to introduce a large number of first-class casting machine production lines from abroad, and then develop small production lines based on these foreign casting machine production lines. However, at this time, no matter what kind of production is made, it cannot be compared with foreign ones.

3. At present stage

At this stage, for casting machines, domestic technology has developed to a certain scale and competitiveness is also increasing. Some of these products can already meet the indicators of similar foreign products, which indicates that China's technology will become increasingly mature.