RO Water purifierThe standard configuring1, filter bottle: 20 inches blue filter bottle (inlet diameter: 3/8", 1/2" and 3/4") 2, filter core: First grade: 20 inches, 5 micron meltblown type of PPF, for clearing the impuritywhich is bigger than 5 micron, like the clay, rust, diffluence in suspension, and so on. Second grade: 20 inches, active carbon granule, for absorbing the remainder chlorin, chlorid, halid hydrocarbon, smell and so on. Third grade: 20 inches, active carbon dollop, for clearing peculiar smell, strange colour, the reminder chlorin, halid hydrocarbon and so on. 3, accessorial configuring: wrench