The filter frame and filter plate are sealed by cardboard or filter media. It is a kind of stainless steel plate and frame precision filter (also known as stainless steel cardboard filter) with a relatively large filtration capacity and a filtration area of more than 1 square meter. Using precision sterilization cardboard to filter various health wines and wines can achieve the sterilization effect.

Compared with ordinary stainless steel plates and frames, it has the characteristics of a large filter chamber volume, high pressure tolerance, high temperature tolerance, and the ability to manufacture larger-sized filter plates. Generally, it adopts hydraulic compression, without the need for sealing rings, and can be sprayed with Teflon. It is mainly applied to large-scale industrial production in industries such as pharmaceutical intermediates, fine chemicals, metallurgy, petroleum, and edible oils.