Five methods of selecting materials for interior d

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Look at the appearance. First, check whether the instructions indicate the main ingredients, whether they contain toxic substances, what toxic substances are there, and how much toxic substances are contained; It depends on whether there is the trademark, production address, anti-counterfeiting mark and green environmental protection mark of the manufacturer; Check whether there is a test report issued by the relevant department. Second, look at the quality of the real object. For example, stones with uniform fine material structure on the surface have fine texture and less pollution. Stones with coarse grain and unequal grain structure not only have poor appearance effect, but also have high pollution. Another example is the large core board. If the surface looks flat, without warpage, the core bar is uniform and tidy, and the gap is small, it is a board with high quality and little pollution. But sometimes seeing is not necessarily true, and we also need to eliminate the false and preserve the true. For example, in the previous period, in order to promote the paint, some businesses painted the paint on the inner wall of the fish tank, and used goldfish swimming to prove that the paint was harmless. In fact, this is not credible, because the organic matter in the paint is insoluble in water and has no impact on goldfish in the water


smell has two meanings, one is to smell, the other is to listen to sound. Smell is to smell whether it is irritating. For example, when choosing furniture, open the cabinet door and open the drawer. If you smell a strong pungent smell, it is enough to make people cry, indicating that the formaldehyde content has seriously exceeded the standard and cannot be bought; When buying paint, you should also smell whether there is a pungent smell or whether the smell is too heavy. In order to promote paint, some businesses use paint to prove that paint with pungent smell is "harmless", which is also not credible. Because the harmful substances of the paint can enter the blood through the respiratory tract after the gas volatilizes, it is difficult to show the harmfulness when entering the digestive tract. When buying a large core board, you should also smell it carefully. If the large core board emits a fragrant wood smell, it indicates that the formaldehyde emission is less; If the smell is pungent, it means that there is a large amount of formaldehyde emission, so it is best not to buy it. Another meaning of smell is to listen to sound. For example, when choosing paint, lift the paint bucket and shake it. If there is a thin sound, it indicates that the quantity is seriously insufficient and the weight is short; Or the viscosity is too low, and the harmful ingredients are large. The environmental friendly paint of regular large factories is made of real materials, and the sound is almost inaudible. In addition, the harmful radioactive substances in natural stones such as marble and granite cannot be seen by the naked eye, but the amount of harmful radioactive substances can often be identified through sound. The sound of percussion is clear and pleasant, which proves that the stone is uniform without micro cracks, and contains relatively few harmful substances such as radium; The rough knocking sound indicates that there are micro cracks or veinlets in the stone or the contact between particles is loosened due to weathering. The harmful substance radon produced by the decay of radium in the stone will be released quickly and more, which will do some harm to human body






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