Nyob rau hauv lub hnub nyoog ntawm cov ntaub ntawv digital, cov ntaub ntawv khaws cia tau tsim los ntawm cov ntawv nqa mus rau hard-disk, flash nco, U disk, SD card thiab lwm yam xov xwm khaws cia.Txhawm rau tsim cov khoom lag luam portable thiab muaj peev xwm loj, cov khoom siv thiab cov txheej txheem yog nyob ntawm kev tswj cov pa phem thiab lim purfication technology ntawm esch txheej txheem.Dongguan kinda tsim thiab tsim ntau yam khoom zoo heev pom thiab lwm yam technologies kom tau raws li cov neeg siv khoom tus kheej cov txheej txheem thiab cov kev cai
