Since the invention of the pellet machine in the 1930s, it has played an important role in the processing and strengthening of metal surface. The flexible and efficient feature of the crawler blasting machine has an irreplaceable role in the processing of small and medium sized castings.

However, after decades of development, we now have the following problems:

 There are many manufacturers, especially small businesses. Small businesses are mostly low prices; The quality is uneven. Many companies have no guarantee of the vulnerability of low-priced projectiles.

 Less innovation in technology. After decades of development, the products are not much improved.

 Bottleneck constraints. There are two major bottlenecks in the crawler projectile, the caterpillar and the alloy.

 Therefore, the current general casting and hardware companies use crawler shot blasting machine while enjoying convenient must endure the frequent replacement track and alloy and reduce efficiency, increase cost brought by the trouble.

 After years of research and practice of polyurethane chemical and process, we have produced the performance of polyurethane blasting machine (national patent in 2016). The use of this kind of caterpillar is more than 10 times longer than that of conventional rubber tracks, which fundamentally solves the biggest problem of the crawlers. At present, the strength of the special alloy for the blasting machine has been made relatively large.

 To sum up, the performance of the track-type projectile is a fundamental breakthrough. The quality, image and reputation of the customer will be greatly improved.