1. The best high-quality membrane material, high packaging transportation 2. Good chemical stability, salt and alkaline resistance, bacteria resistance. 3. High filtration, filter size 0.01 micrometer, to ensure drinking water quality when washing. 4. The product can be automatically adjusted to ensure water quality stability water safety. 5. The filter element should not be used with safety, it is for transportation and storage. Note: The data are all measured manually, please allow 1-3 cm error due to differences in light and display, there may be color differences, please refer to the actual item received.