The Xiaomi Eco-chain AirPOP mask has been optimized on the previous mask for the Mi family, making it more comfortable to wear and cheaper, including more environmentally friendly packaging. Valves and valveless versions, after the outbreak, the basic disappearance of the valve, the valve can discharge moisture, the use experience is better, commercially, the valve is also the focus of the brand, perhaps in the near future with valve masks will appear again.