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Frequently Asked Questions - MDF

The WELs for hardwood dust, softwood dust and formaldehyde are expressed in the number of milligrams (mg) of material in one cubic metre of air (m3). Levels of formaldehyde are also expressed in parts per million (ppm). The current WELs are: Formaldehyde - 2.5 mg/m3 or 2 ppm for both the long-term exposure limit and the short-term exposure limitMedical Mask 1Singapore facemask F90; packaging grade A facemask in Italy; new KP95 mask Australia; formaldehyde free KP95 mask in USA; disinfection grade B mouth muffle in Australia; buy factory price 4 layers kn95 mask in; GBR medical mask KN90; packaging KP100 face mask in Austria; ffp3 CE certification face mask Austria; antipollution pollen pm 2 5 dust , formaldehyde free grade d facemask usa

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