* Disposable Face Mask Advantages: 3 layers of filtration, no odor, anti-allergic materials, sanitary packaging, good breathability. * Sanitary mask effectively prevent inhalation of dust, pollen, hair, flu, germ, etc. Suitable for daily cleaning, allergic. [Product Specification] Product Type3ply disposable face mask with ear-loop MaterialsPP non-woven & filter& ES cloth Size17.5 x 9.5 cm or any you need Weight20 g + 20 g + 25 g or any you need Packing50pcs/box, 2000pcs/carton [Product Feature] [Use Condition Editing] There are various types of disposable dust masks, which must be selected according to different operating needs and working conditions. First of all, it should be selected according to the dust concentration and toxicity. According to GB / T18664 "Respiratory protective equipment selection, use and maintenance", as a half mask, all dust masks are suitable for environments where the concentration of harmful substances does not exceed 10 times the occupational exposure limit, otherwise a full mask or protection level should be used Higher respirators. If the particulate matter is highly toxic, carcinogenic and radioactive, the filter material with the highest filtration efficiency should be selected. If the particulate matter is oily, be sure to select a suitable filter material. If the particulate matter is needle-shaped fiber, such as slag wool, asbestos, glass fiber, etc., because the dust mask can not be washed, the mask with the tiny fiber stuck on the face sealing part is likely to cause facial irritation and is not suitable for use. For high-temperature and high-humidity environments, it is more comfortable to choose a mask with an exhalation valve. A mask that can remove ozone can be used for welding to provide additional protection. However, if the ozone concentration is higher than 10 times the occupational health standard, the mask can be replaced. Poison combination filter element. For environments where there is no particulate matter, but only certain odors, it is much lighter to choose a dust mask with an activated carbon layer than a gas mask. [Packing Details] 50 pieces comes in one colorbox 2000 pieces (40 boxes) in one carton Carton Size: 53x43x38cm Volume Weight: 17.5kg [How To Use?] 1. Wash your hands before wearing a mask. 2. When wearing a disposable medical mask, fully fold the folded face, wrap the mouth, nose, and mandible completely, and then press the nose clip tightly so that the mask fits the face completely. It should also be noted that disposable masks are divided into inside and outside. The light-colored side has hygroscopic function, and should be attached to the mouth and nose, with the dark side facing outward. To detect whether the mask fits tightly with your face, the method is very simple. Take a deep breath and then blow a few breaths quickly to see if your nose and mouth are leaking. 3. After wearing the mask, try not to touch the mask. If you must touch, remember to wash your hands before and after touching. 4. When removing the mask, try not to touch the outside of the mask. Remember to wash your hands immediately after removing the mask. [Shipping Method]Health Mask website:http://www.hzfacemask.com/face-mask/health-mask/