Micro sol particles can condense into greater droplet, and grew up until the flow to the fabric filtermedium bottom and be ruled out.
微溶胶粒子可以凝结成更大的液滴，并逐渐长大，直至流向织物过滤介质底部而被排除。
2
The filtermedium inside PGP type filter is a level filter plate, or a combination plate made up of the level filter plate and filter media of other shape.
Particle filters should include (or pressure differential gauge display), so as to explain when should change the filtermedium, when filter service life to also shall be replaced.