If the standard is not serious, I will provide you with several ventilation methods, which are the simplest and most effective ways to dilute many harmful substances in the air. Green plants, green radish, etc. Can absorb formaldehyde. It should be noted that if the green plants begin to wither and die after moving into a new house, it means that formaldehyde is too serious and needs professional treatment. Other methods have yet to be identified, and grapefruit peel, pineapple, water and other methods are also nonsense. If the humidity in the air is relatively high, the formaldehyde content will also rise, so these methods are not suitable for use. If the formaldehyde exceeds the standard too seriously, it is recommended to ask professionals to deal with it. If you use the self-test box to test, it is recommended to test more times to improve the accuracy. There are pregnant women, elderly people and children at home, so we must pay attention to this one. Their resistance is relatively low. Conrada, besides formaldehyde, we are more professional.