Diatomite plate-frame includes three types TBGS/400,TBGS/600 and TBGS/1000. Their filteration principle is the same that they all made with use of diatomite and paperplate as filtering agent. They can be used in brewage, wine, pharmacy, chemical industries. The strength value of the liquid filtered by the above filters reaches to below 0.5 EBS. The filters have characteristics such as simple structures, reliable quality and easy to operate etc..