An insect repellent in which the smoke emitted from the drug is used to expel mosquitoes or smother mosquitoes. China's mosquito-repellent incense has a very long history, the traditional mosquito-repellent incense and incense coil two.
Smoke from mosquito coils contains four types of substances that are harmful to humans: ultrafine particles - soot (particles less than 2.5 microns in diameter), polycyclic aromatic hydrocarbons (PAHs), carbonyls (such as formaldehyde and acetaldehyde) and benzene. At the same time, in addition to these four obvious types of harmful substances, there are a lot of organic fillers, binders, dyes and other additives in the mosquito coils so that mosquito coils can burn without flame.
Zhejiang Zhengdian industry co., Ltd is a large collectivized enterprise ,the products including: ZENDEN brand household health pest control products,"zhengdian " brand playing cards, "Osib" brand liquid laundry detergent, WuYi Niutoushan national forest park, and GuiLin Zhengdian Idustry Branch . "ZENDEN" trademark is Chinese Well-known trademark.
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