We are professional manufacturer of blood collection tube and Virus Sampling Tube/Viral Transport Medium(VTM) which is widely used for the big outbreak of virus all over the world. VTM kit with nasal or throat swab Packing: 25 PCS/BOX, 20 BOXES/CARTON, 500PCS/CARTON; 50PCS/BOX, 20 BOXES/CARTON, 1,000PCS/CARTON Tube Size:16*100mm Brand: CHAORAN or OEM Tube Material: Plastic