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So this mask has a certain isolation effect on the virus. Theoretically, the KF94 mask can be reused. If you are worried about unsafe, you can also choose to discard it after one-time use; if the user pollutes the environment for a long time, it is best to replace it every 8 hours. Remind everyone that if the KF94 mask is damaged, contaminated or the wearer feels that the breathing resistance increases, it should be replaced in time; in addition, the filtration diameter and filtration efficiency of the N95 mask is better than that of the KF94. Therefore, it is clinically recommended that people use N95 masks when preventing new types. 1. The power supply for the automatic KF94 fish mask machine is 220V. Check whether the power supply voltage is consistent and stable. Only when it is consistent and stable can the power supply be connected. Otherwise, the power supply system, ultrasonic system and accidents may be easily damaged!

2. Wash your hands before wearing the mask. Avoid touching the inner surface of the mask while wearing the mask to minimize the possibility of contamination of the mask. Masks should be distinguished from inside and outside, from top to bottom. A disposable medical surgical mask with the dark side facing out and the light side facing in; one end with a metal strip (nose clip) is up. Wash your hands after using up the mask and throw it away.

Hearing the news of the outbreak of a new type of pneumonia in Wuhan, China, Mr. A, a representative of the circulation company, visited a mask production factory in Gyeonggi Province last month. Health-care masks even appeared "shortage" and their prices skyrocketed, so they decided to produce them directly. The production of masks hurriedly invested cannot proceed smoothly. A originally wanted to obtain the "KF" (KoreaFilter) certification for masks from the Department of Food and Drug Safety, but ultimately failed the review. In this way, "low-end" masks that did not meet the health-care mask standards were born.