Question 1: What is formaldehyde? A: Formaldehyde (CH2O) is a chemical substance that is gas in people's daily life and is colorless and strongly irritating. Formaldehyde is usually stored in water to form an aqueous formaldehyde solution, formalin. Question 2: Why is there formaldehyde in the floor? Is there any other harmful substance on the floor? A: Adhesives are used in the production of flooring, and formaldehyde is one of the main components of the adhesive, so there will be formaldehyde in the floor. Except for formaldehyde, there are no other harmful substances in the floor. Question 3: It is said that wood itself contains formaldehyde. Is this the case? If so, what is the approximate value? A: Yes, the wood itself contains aldehydes. There are trace amounts of aldehydes (including formaldehyde, acetaldehyde, propionaldehyde, etc.) in wood. It is about 4mg/100g (detected by perforation extraction method), 9mg/100g is E1 standard, so the aldehyde content of the wood itself is definitely there. Question 4: Is there a formaldehyde-free floor? A: There is a formaldehyde-free floor, but the adhesive it uses is toxic and not suitable for home use. Question 5: What is the environmental standard for formaldehyde emission from the floor? Is the floor in this range harmless to the human body? A: China's national standards for the formaldehyde emission of the floor are mandatory environmental standards: E1, ≤1.5mg / L (dryer method), ≤ 0.12mg / L (climate box method, used in arbitration) . Products that meet national environmental standards are harmless to humans under normal conditions of use. Question 6: What are the E0 environmental standards that are currently being stirred up? 0.5 is E0, and 0.7 is E1, 0.7 is 0.5 is a world apart? A: The current national standard for flooring in China is E1. There is no E0 standard. E0 is the standard for Japanese JISA5908 substrate. It requires formaldehyde emission ≤0.5mg/L. Question 7: What kind of environmentally friendly flooring should I choose? In general, the choice of E1 environmentally friendly products is completely sufficient, and there is no need to blindly pursue the highest standards. The national E1 environmental standards for flooring have already taken into account the factors affecting human health, so it is ok to select products that meet environmental standards.
Water Feature does not disperse, section by section jumping, such a fountain is called weathering steel water curtain, water curtain is an interactive and entertainment strong water feature equipment, Garden Water Fall suitable for some commercial squares, large amusement parks and other places with more people flow, because weathering steel itself than all materials rust prevention, more suitable for indoor and outdoor use than other materials. The advantages of fresh and strange make it become a "sharp tool" to attract people. For other facilities, the Water Fountain has the advantages of installation, quick and convenient movement. In addition, the water curtain has a strong adaptability to the application site.The rusty surface of weathering steel can easily make people feel the vicissitudes of history, thus visualizing the concept of time, which cannot be captured. Therefore, it is natural to apply it to the creation of some commemorative gardens. Because this sense of vicissitusions can be naturally integrated into the surrounding gentle descent, rusted steel is often given the label of science and technology, artistic creativity and applied to some water curtains. Weathering steel for you to deduce the harmony of art and aesthetic, together feel the return to nature of the red rust art, unique processing technology, later can be free from maintenance. Weathering steel safety, environmental protection, beautiful and generous, very popular with designers.
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