... factories, 2 Roller mill factories, 2 Sifter factories,Cleaning system machine factory and pipes factory to become the largest ... of the following: 1. wheat storage (silos, or warehouse) ---------- 2. cleaning system (sifter, destoner, seprater, magnet, scourer, etc) ----------- 3. dampening ( ... . Remove 90% big impurity and 95% dust. > Cleaning Section Further to clean out the middle and small impurity ...