1. Peb tau nyob rau hauv daim teb no rau ntau tshaj 10 xyoo, thiab peb muaj ntau yam khoom thiab kev pab cuam network 2. Tag nrho cov ntau lawm, peb sim 100% ntawm lub tshuab luam ntawv, ua hauj lwm kom zoo, ces peb ntim 3. Tag nrho cov cartridges tau dhau high temperature test/freezing test/voltage test/drop test, etc 4. Tag nrho cov tshuab luam ntawv qhov chaw (chip, reset, 5. ink) cov qauv tshiab thiab lwm yam. tswj, ci xim, zoo reducibility. 6. Kev ziab kom qhuav sai, zoo sib xws, ruaj khov zoo, tsis ntxhib, Qhov zoo kom tau raws li cov neeg siv khoom xav tau.