1) The hopper can load and unload the coal cinder, the cement powder and the iron powder and and so on. 2) It can be installed on dust catcher, electric hydraulic door, and vibrant supplying material devices. All of these can greatly improve work efficiency. 3The dust-trap rate of this hopper is up to 99.9%, and effectively resolve the problem of dust pollution for the port. 4) Good quality and fast delivery is our commitment to the consistent principle.