Hangzhou city wall coating product quality supervision and inspection rate 91.5%

<p> Recently, Hangzhou municipal Bureau of quality and technical supervision inspection the Hangzhou 59 enterprises production of 59 batch coating product, the results of the qualified 54 batches, rate 91.5%. Non-conformance is on rates, free formaldehyde content. </ .p> <p> Formaldehyde is a colorless, with strong pungent smell of gas. Formaldehyde toxicity findings in irritation, allergic and carcinogenic, etc, if the room the formaldehyde concentration is too high or long-term exposure can cause nasal diseases such as cancer ., leukemia, the first known renovation of formaldehyde. National mandatory GB18582-2001 indoor decoration materials interior paint limit of harmful substances in the formaldehyde as a strict limits: interior paint free formaldehyde content ≤ 100mg/kg. This sampling found 3 batch product free formaldehyde .exceeds the allowed figure. Of these, Hangzhou John paint co., Ltd. production of YH-700-interior paint (production date: 2009.7.15) free formaldehyde content measured up to 280 mg / kg, the limit for standard 2.8 times. .Due mainly to the enterprise in LaTeX and other raw materials purchasing, quality control, or to extend the shelf life of the coating, excessive formaldehyde. </ p> <p> The ratio of reflected light is white and coatings to eliminate surface color, .paint, the lower the ratio, the more the product of covering performance, to eliminate the role of surface color. This sample has three batches of products on ratio does not comply with the standard requirements. Mainly part of the enterprise in order to reduce costs ., with cheap filler instead of white pigments, resulting in a low contrast ratio. </ p> <p> <p> </ p> </ p>.