... patent 3 Three core patents 4 Advanced level 5 Dust collector adopt Germany technology Company introduction Double Star Luohe Zhongyuan Machinery ... type dust collectorPPW type air box pulse bag-type dust collector adopts advanced and efficient three state off-line dust structures ... made up of body,dust hopper,dust discharging device,air collector,support,pulse dust remover,electrical system and so on. ...