Iimathiriyeli ekrwada zamakhadi ovavanyo lwe-COVID-19 antigen zizinto zepolymer ezifana nePVC, PP, ABS, kunye neHIPS. Umatshini wokumakisha we-laser we-UV uyakwazi ukuphawula iindidi ezahlukeneyo zesicatshulwa, iisimboli, kunye neepateni kumphezulu weebhokisi zokubona ii-antigen kunye namakhadi. I-TEYU UV laser yokumakisha i-chiller inceda umatshini wokumakisha ukuba uphawule ngokuzinzileyo amakhadi ovavanyo e-COVID-19 antigen.