he roof structure beam , will not affect any ground work area and normal work process , safe and reliable ; Technical innovation , low speed , less wear , maintenance-free , long life span. ApplicationCommercial area: Exhibition center, 4S shops,large terminal market,supermarket.Industrial area: Gyms your packing?Export standard plywood cases.Contact Below:Suzhou Optimal Machinery Co.,Ltd.Add:75#,Jiangpu Road,Suzhou Industrial Park,Suzhou City,China(Post Code：215126)Contact us:Joy Wong Mob/