Regardless of the type of sheet, the glue is indispensable in the manufacturing process, so the formed sheet will release free formaldehyde, but it is harmless to the human body at a certain concentration, and the consumer recognizes the quality of the sheet. The most important concern is the amount of formaldehyde released from the panels used in furniture. According to national standards, the formaldehyde emission per 100 grams of particleboard should be less than or equal to 30 milligrams; for E1 grade MDF, the formaldehyde emission is less than or equal to 9 milligrams per 100 grams; in the E2 grade medium density board, the formaldehyde emission is 9 Between milligrams and 40 milligrams. That is to say, the amount of formaldehyde released is higher than the above-mentioned standard plate furniture, it is not suitable for purchase. Consumers can ask the merchant to issue a test report of the furniture substrate to identify whether the indicator meets the requirements. Melamine itself is very toxic, relatively stable, and does not have free toxicity after curing. Whether the melamine board for making furniture is polluted by air depends on the medium-density board or particleboard substrate used in the melamine board. If the formaldehyde emission of the substrate reaches the environmental standard, melamine will not aggravate the material pollution. "The melamine board has no odor. The odor is emitted from medium-density boards of lower quality, binders used in coatings or formaldehyde in additives. Led Street Light,Smart Street Light,Iot Street Light,Outdoor Adjustable Street Light Fixture WOSEN LIGHTING TECHNOLOGY LIMITED , https://www.wosenled.com