Hei tango i te wera nui mai i te laser UV, ka kii a Mr. I tohua e Baek a S&He whakamatao taiaho a Teyu CWUL-05.
Ko Mr. Ka mahi a Baek mai i tetahi kamupene hangarau i Korea, ko tana mahi he tapahi i te PCB. Ko te tapahi PCB ehara i te mahi ngawari, no te mea he iti noa te PCB. Engari te waimarie, he "patu huna" tana ka taea te mahi ki runga i taua waahi iti. Na ko te PCB UV miihini tapahi laser. Ka rite ki tona ingoa fokotuu, PCB UV mīhini tapahi taiaho whakamahi taiaho UV rite puna taiaho me te UV puna taiaho te mohiotia ki te kore-whakapā kounga, na e kore e kino te reira i te mata o te PCB me he pai mo te tukatuka pū. Hei tango i te wera nui mai i te laser UV, ka kii a Mr. I tohua e Baek a S&He whakamatao taiaho a Teyu CWUL-05.