In October of this year, we installed several spiral silos in Anshan city, north of China. This spiral silo group is made of four steel silos, which silos are used to store fly ash in one big power station. Among this spiral silo group, each of the silo capacity up to 10000 ton, and the all silos group is equipped with all set silo auxiliary, including transporting system, ventilation system, dust cleaning system, etc.