Khoom siv Exhibition

ntau lawm-rhiav 7

Cov khoom siv ntau lawm

Kev tsim khoom-cov khoom siv 7

Cov khoom siv ntau lawm

Kev tsim khoom-cov khoom siv 9

Cov khoom siv ntau lawm

ntau lawm-rhiav 5

kev cob qhia ntau lawm

Integrating-sphere

Kev sib koom ua ke

Txhaj-moulding-tshuab1

Txhaj tshuaj molding tshuab

Txhaj-moulding-tshuab

Tuag casting tshuab

Tuag-casting-tshuab 2

Tuag casting tshuab

Peb-yuan

Peb yuan