]Ngwa ngwa nke kaadị nnwale COVID-19 bụ ihe polymer dị ka PVC, PP, ABS, na HIPS. Igwe akara laser UV nwere ike ịka ụdị ederede, akara na ụkpụrụ dị iche iche n'elu igbe na kaadị nchọpụta antigen. TEYU UV laser akara chiller na-enyere igwe akara aka akara kaadị nnwale COVID-19 nke ọma.