Hnub no peb tau xa 128 phab ntsa-mounted ultrasonic flowmeters rau Kazakhstan. Ua tsaug rau koj txoj kev ntseeg thiab kev txhawb nqa.
|
|
|
|
|
|
Peb tau ua hauj lwm ua ke rau 7 xyoo thiab yeej ib txwm tuav lub siab dawb paug thiab kev koom tes.
Xav kom peb cov neeg koom tes ua lag luam vam meej !!!