Do you need to wear a mask?
2015-12-12When the haze day comes, the street people are in a hurry to depart start wearing masks. However, wearing a mask, after all, a lot of the same, especially in th...
When the haze day comes, the street people are in a hurry to depart start wearing masks. However, wearing a mask, after all, a lot of the same, especially in th...
A few days ago, the National Health Industry Enterprise Management Association of Internet mobile medical professional committee was established in Beijing. At ...
In April 1, 2000, the promulgation and implementation of the regulations on the supervision and administration of medical devices (hereinafter referred to as th...