Cov Khoom Siv Hluav Taws Xob Cov Hluav Taws Xob Des Dej zog daus
Nrog rau "cov neeg siv-taw qhia" kev ua lag luam ua lag luam zoo, peb ib txwm muab cov khoom lag luam R & D tau zoo, peb ib txwm muab cov khoom siv R & DIST, zoo meej
Txais tos rau buddies los ntawm thoob plaws lub ntiaj teb tuaj xyuas, tutorial thiab sib tham.





