Zuo shangmingshe wardrobe F 4 stars in hand enviro

2022-07-22
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In China, Zuo shangmingshe took the lead in launching the F4 star detection standard, bringing the healthiest and most environmentally friendly products to consumers. For Zuo shangmingshe, F4 star is not a gimmick, it infiltrates into every product of Zuo shangmingshe series

what is formaldehyde

formaldehyde, chemical formula HCHO, formula amount 30.03, also known as formic aldehyde. Colorless gas, with a special pungent smell, has a pungent effect on human eyes, nose, etc. the relative density of the gas is 1.067 (air =1), and the liquid density is 0.815g/cm3 (-20 ℃). Melting point -92 ℃, boiling point -19.5 ℃. Soluble in water and ethanol. The concentration of aqueous solution can reach up to 55%, usually 40%. It is called formaldehyde water, commonly known as formalin. It is a colorless liquid with a pungent smell... Speak human words! Formaldehyde is a chemical substance

why should we drive away formaldehyde

the main harm of formaldehyde is to stimulate the skin and mucosa. When formaldehyde reaches a certain concentration indoors, people will feel uncomfortable. Formaldehyde concentration greater than 0.08m3 can cause red eyes, itching eyes, throat discomfort or pain, hoarseness, sneezing, chest tightness, asthma, dermatitis, etc. The newly decorated rooms have high formaldehyde content, which is the main inducement of many diseases

f 4 stars, the healthiest business card

in fact, with the progress of science and the improvement of production technology, as long as the application of formaldehyde chemical reaction is controlled to a complete reaction state, the formaldehyde emission limit can be close to a near zero level. In 2008, the world's most stringent formaldehyde limit grade standard - F ★★★★★ (f 4-star) grade was published internationally, providing an environmental protection standard basis for consumers to choose and buy home decoration materials. The average formaldehyde emission limit of products that reach the f ★★★★ (f 4-star) level is lower than 0.3mg/l, which is stricter than the internationally accepted E0 level standard. It will not cause any harm to human body, and it can be recognized that there is no limit on indoor use area. This limit value is even far lower than the current limit value of 0.9mg/l of drinking water in China. F ★★★★ (f 4-star) will soon become a business card of "the healthiest"

Zuo shangmingshe, the highest level of household environmental protection

in China, Zuo shangmingshe took the lead in introducing F4 star detection standard, bringing the healthiest and most environmentally friendly products to consumers. For Zuo shangmingshe, F4 star is not a gimmick, it infiltrates into every product of Zuo shangmingshe series

Zuo shangmingshe has taken good care of your health and your family for many years. The long-term trust of 600000 users is also the best evidence of Zuo shangmingshe's safety and confidence

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