1, Steel Silos with Flat Bottom and Steel Silos with Hopper Bottom 2,Handle equipments 3,Cleaning and dust removing system SHANDONG ... of grain storage systems which include:- steel silos with flat or hopper bottom,- aeration system,- temperature measurement system, - handle quipments,- grain cleaning ... complete grain storage system. Welcome to CHINA, Welcom to YIKAI ! Flat Bottom Steel Silo