1. Cov khoom siv plhaub yog hlau, du nto, hnav-resistant, tsis yooj yim rau xeb.
2. Concise tsos, ntev kev pab cuam lub neej, muaj kev ntseeg siab.
3. Cov qauv sab hauv yog yooj yim, yooj yim rau kev khiav lag luam, yooj yim rau nruab thiab siv.
4. Cov khoom siv hluav taws xob sib txawv tuaj yeem tswj tau los ntawm kev teeb tsa cov qauv sib txawv, xws li xovxwm luv, xovxwm ntev, thiab lwm yam.
1. Cov cuab yeej tswj kev lag luam: xws li cov cuab yeej siv tshuab, cov kab ntau lawm tsis siv neeg thiab lwm yam tshuab thiab khoom siv.
2. Cov khoom siv hauv tsev: xws li TV, lub tso suab, lub tshuab ntxhua khaub ncaws, qhov cub, microwave qhov cub, thiab lwm yam.
3. Cov khoom siv hluav taws xob: xws li khoos phis tawj, saib, keyboard, nas, scanner, tshuab luam ntawv, thiab lwm yam.
4. Cov khoom siv sib txuas lus: xws li xov tooj ntawm tes, xov tooj, routers, keyboards, thiab lwm yam.