Available filter material type Cellulose-engine fuel filter material usually adopts pleated forming cellulose base material.It is a cost-effective filter material that effectively meets the application's requirements for efficiency and dirt holding capacity.Treated cellulose (for oil-water separator FFWS)-Treatment of cellulose with silicone-based materials can achieve effective water separation.Normally, this filter is used on the suction side of the fuel system to remove harmful water and coarse particles.The innovative Synteq™ we use in FFWS-uses both cellulose and melt-blown synthetic layers to achieve a higher level of fuel filtration performance.This double-layer filter material increases the particle holding capacity (longer filter element life), creating a high-performance water separator.It provides high-rate separation of emulsified water and can be used on the suction side and pressure side of the fuel system.