Zhengzhou Environmental Protection Company basically charges for detecting formaldehyde. There is no such thing as a free lunch, and free testing may be tricky. Zhengzhou formaldehyde detection is charged by points. Generally, a point of 20 square meters is 100 yuan, and less than 20 square meters is counted as a point.
When testing formaldehyde in in addition to formaldehyde Company, we should pay attention to whether the instrument used by the other party has CMC measurement certification certificate. If not, and the instrument is a six-in-one instrument, we should beware of data manipulation.