The preferred Sterile Nasal Swab as flocked swab for Pcr Nasal Swab covid specimen sampling. • Nylon Flocked Nasopharyngeal Swab, ensure high sample collection efficiency, due to the unique spray type nylon pile implantation technology. • Raylon flocked swab and ABS swabstick with different breakingpoint, easy to operate and no interfere with PCR testing.