standard E1 level, the release of not more than 1.5 mg / cubic meter. The new standard canceled the E2 level, retaining only the E1 level, and increased formaldehyde emission limit requirements. Its provisions formaldehyde emission limit value of 0.124 mg / cubic meter, limited edition identification E1. The new standard also abolished the original standard dryer method, perforation extraction formaldehyde emission limit value, formaldehyde emission test method for the determination of unity as '1 cubic meter climate chamber method.' '1 cubic meter climate chamber' test duration of at least 10 days, at constant temperature, constant humidity and constant air flow, measured from the 7th day. When the number of tests more than 4 times, and the last two times the difference between the results of less than 5%, only the average value as the measurement results. If the difference between the two measurements is greater than 5%, but also measured once a day. If the steady state is not reached within 28 "
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