... efficiency and whole-closed structure,which is suitable to filter particle, powder and sticky liquid material .SUITABLE AREAGRADE:The ... to 5 layer and separate 2-6 grades particle. REMOVE IMPURITY:Removing the larger size or less size impurity. ... , industrial medicine, cosmetic, coatings, etc. Ceramic and Abrasive: Alumina, quartz sand, mud, and carborundum., etc. Food industry: Sugar powder, starch, ...