Chinese National Standards：

 GB 34914—2021  Limit Values and Grades of Water Efficiency for Water Purifiers

This standard will be implemented on July 1, 2022, and specifies the water efficiency level and limit value of water purifiers, promoting the progress of water-saving technology in the industry. At present, the proportion of first level water efficiency products has reached 80%

GB/T 30306—2024  Household and Similar Use Drinking Water Treatment Filter Cartridge

Implemented on February 1, 2025, new requirements for quality traceability system have been added, and the safety of filter materials has been strengthened (such as detection of bisphenol A and phthalates)

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