Be aware of the formaldehyde issue in home decoration!

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1. The hazards of formaldehyde: Formaldehyde has been identified by the World Health Organization as a carcinogenic and teratogenic substance. The effects of formaldehyde on human health are mainly manifested in abnormal sense of smell, irritation, allergies, abnormal lung function, abnormal liver function, and abnormal immune function. When its effective concentration reaches 0.06–0.07 milligrams per cubic meter of air, children will develop asthma. Experts conducted tests in several cities at different seasons, and after analyzing large amounts of data, they found that under normal conditions, the formaldehyde concentration in indoor areas can drop below 0.1 mg/m3 five months after interior decoration is completed. Seven months after the renovation, the level can be reduced to below 0.08 mg/m3; an indoor environment at this level is considered normal. If, 10 months after the renovation, the level of formaldehyde in the indoor air remains high, it indicates a problem that must be addressed as soon as possible. 2. How to prevent excessive formaldehyde levels 　　　First, determine the decoration plan reasonably. Especially for the floor materials in a room, it is best not to use the same material over large areas. Calculate the usage amount of large core boards reasonably. 　　Second is to scientifically select the construction techniques. Unless there are special requirements, it is generally not advisable to lay large-core boards under laminate flooring. Cabinets and radiator covers made from large-core boards must be sealed with formaldehyde-based sealants; there should be no exposed areas. It is advisable to use paint with a thick coating layer and good sealing properties. 　　Third, strictly control the quality of decorative and renovation materials. For laminate flooring and large-core boards, the formaldehyde emission level should be a key factor in making a choice. 　　Fourth, extend the time before moving in appropriately; where possible, allow the room to ventilate for some time before occupying it, so as to help release as much formaldehyde as possible. 　　Fifth, pay attention to the testing and purification of formaldehyde indoors. Especially in households with the elderly, children, and people with allergic sensitivities, it is essential to strictly control the level of formaldehyde indoors. 3. Relevant standards: The currently **issued testing standards related to formaldehyde in indoor environments are mainly as follows: 1. The **standard of the People’s Republic of China, “Hygienic Standards for Formaldehyde in Indoor Air,” specifies that the maximum allowable concentration of formaldehyde in indoor air is 0.08 milligrams per cubic meter. 　　2. The **standard of the People’s Republic of China, “Solid Wood Composite Flooring”, stipulates that for solid wood composite flooring of Class A, the formaldehyde emission level must be less than or equal to 9 milligrams per 100 grams ； The formaldehyde emission level of Class B solid wood composite flooring is 9 milligrams to 40 milligrams per 100 grams. 　　3. The **Technical Requirements for Environmentally Labelled Products – Artificial Wood Panels** stipulate that the formaldehyde emission level in artificial wood panels should be less than 0.20 milligrams per cubic meter ； The formaldehyde emission from wooden floors should be less than 0.12 milligrams per cubic meter. I hope this can provide a little help to the brothers and sisters on the forum.