... 4. Easy to understand . The bolted silo is equipped with relevant accessories, such as: conveyor, ventilation, drying and ... Natural ventilation vents,Suction Fan,Ventilation Blower,Ventilation channel with net sheets;Ventilation System includes Natural ventilation vents,Suction ... Fan,Ventilation Blower,Ventilation net pipe.6. Hopper bottom steel silo and Flat bottom steel siloWe can ...