Exhibition

Dab tsi yog lub tswv yim tsim ntawm cov khoom siv npua?

Npua rau cov txiaj ntsig ntawm cov neeg

Npua khoom siv nrog lub sijhawm cib ntsa hlau kem qauv

Txhim kho npua cov cuab yeej los txhim kho qib ntawm npua ntau lawm

Cov cuab yeej tu tsiaj txhu yog dab tsi?

Yuav ua li cas tuav cov khoom siv npua

Feed conveyor yog ib txoj kab khiav nrawm

Feed conveyor tau siv dav dua

Lub sieve ntawm feed conveyor yog polished tiag tiag ua rau hmoov