Sampling Swab
The sampling swab is the flocking sampling head, which has no toxic effect on cells and viruses. The embryo contains RNA enzymes, which can maximize the collection and release of virus samples and ensure the accuracy of PCR detection results. The plastic rod is made of ABS material, with unique design of breaking, no tiny debris in the process of breaking.
https://www.rollmed.net/swab/swab-vs-nasal-covid-test.html