mainly because E2 = 5.0 mg/L and E1 There is a large difference between the grading values ??of =1.5 mg/L, with a difference of 3.5 orders of magnitude between the two, which is not scientific enough and is not conducive to the detection of formaldehyde.It can be seen from the changes in the national standard that the detection of formaldehyde emission will be more stringent in the future, and this will also promote the progress of the flooring industry. The level of E2 in China's formaldehyde emission standard was revoked in the new national standard,
mainly because E2=5.0mg/L and E1=1.5mg/L have large differences in grade values, a difference of 3.5 orders of magnitude between them. The weaker sex is also not conducive to the detection of formaldehyde. It can be seen from the changes in the national standard that the detection of formaldehyde emission will be more stringent in the future,
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