A. Upgrade: The water filter has an additional layer of rubber seal to prevent unfiltered water from leaking. The housing of the water replacement filters is made of environmentally friendly food-grade plastic, which contributes to safe filtration. B. Multi-layer Filtration: The water purifiers feature a multi-layer filtration system that uses activated carbon and an ion exchange system to reduce odors. 30% more resin is added than other filters to the ion exchange (if a large yellow substance is seen in the filter, that is the resin), which helps reduce TDS and calcium, magnesium, chlorine and other ions in the water. Please note: The actual filtration effect is affected by the region. C. Protect the Environment: One zero water filter replacement can continuously filter approximately 40 gallons of water, which can save money on 500 bottles (300ml bottle) of drinking water. It also reduces the use of plastic and protects the environment. D. Replacement Models: The zero water filters are compatible with water pitchers ZR-001, ZR-003, ZR-004, ZR-006, ZR-008, ZR-012, ZR-017, ZR-600, ZP-007RP, ZD-013W, ZD-013D, ZR-0810G, ZR-0810-4, ZP-010, ZD-010RP, ZS-011RP, 010RP, ZS-011RP, ZD-012RP, ZD-20RP, ZD-018, ZD-030RP, ZJ-003, ZJ-004S, ZP-006-4, ZBD-040-1. For a fresh drinking water experience, it is recommended to replace the zero water filter once a month. When the filtered water begins to taste sour, the water filter has reached its limit and should be replaced. E. Colour: White F. Material: Plastic + Resin G. Package Contents: 3x Water Filters H. Only the above package content is included; other products are not included. I. Note: Light reflection and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement allowed error is +/- 1-3cm.