Zida zopangira makhadi oyesa a COVID-19 antigen ndi zida za polima monga PVC, PP, ABS, ndi HIPS. Makina ojambulira laser a UV amatha kuyika zolemba zosiyanasiyana, zizindikiro, ndi mapatani pamwamba pa mabokosi ozindikira antigen ndi makadi. TEYU UV laser chotchinga chiller imathandizira makina ojambulira kuti alembe mokhazikika makhadi oyesa a COVID-19 antigen.