RO Membrane spacer is the sourcing water channel of RO membrane element. Its quality determines the filtration effect and service life of RO membrane element. If there are tiny burrs on the spacer surface, the burrs will puncture the RO membrane flat sheet surface and cause salt rejection rate to decrease. If the thickness or angle of the RO membrane spacer is uneven, It will cause water flow obstructed, causing RO membrane element chock up easily.