Tsawb txiv tsawb tsob ntoo
(Tib STEM) (CUSTOM LOJ: 3'-12 ')
Qhov tsob ntoo tsawb tsob ntoo no yog tsim los ntawm tes ua khoom siv tes ua los ntawm tsom iav tsawb tsob ntoo thiab lub caij nplooj zeeg muaj xim tsawb tsawb nplooj ntoo.
Tsiaj txiv tsawb tsob ntoo yog qhov yuav tsum tsim kom muaj lub chaw kub thiab muaj xyoob ntoo.
Cim npe nrov: txiv tsawb tsob ntoo, Tuam Tshoj, lwm tus neeg, manufacturers, hoobkas, kho
