This is a workflow diagram illustrating the water-purified treatment process. First, the original water should go through sand filtration, carbon filtration, and fine filtration. After that, passing through the booster pump and the reverse osmosis, the water will go into the oxidizing tank and then the buffer tank. Finally, the purified water will get to the filling line. You can learn more details on the diagram and make a similar workflow diagram with EdrawMax easily.