... control dust ideal equipments. Second, characteristics SLVds -0.1 manual single, double flat gate simple structure, light weight, flexible ... manufacturing, high strength, good performance and long service life etc. SLVds -0.1 manual single, double flat gate screw and nuts ... influence.Three, working principle Nantong middlings SLVds -0.1 manual single, double flat gate mainly by the framework, screw ...