The repeated use bacteriostatic performance test of health box's covid-19 inactivated mask is supervised by the national notary office. Tested by Ningbo Customs Technical Center, an authoritative CMA and CNAs organization, the experimental results show that under the standard environment, the health box's covid-19 inactivated mask can be worn repeatedly for five days for more than 120 hours. The sterilization efficiency of the covid-19 inactivation mask after use is still more than 99%. The following is the test report of repeated test of health box's covid-19 inactivated mask:

This is the first time that Anhui Health box Technology Co., Ltd. publicly released the sterilization efficiency report of health box's covid-19 inactivated mask after reuse to the world. Cameras were taken throughout the repeated experiment to ensure the openness, transparency and authority of the experimental process.