Peb tus kws tshaj lij ua tiav cov hmoov txheej txheej instathlation nyob rau hauv ib lub teb chaws eurgen

Peb tau xa peb tus kws tshaj lij los qhia ib txheej ntawm cov hmoov txheej txheej nruab rau hauv ib lub tebchaws Europ. Cov txheej txheem teeb tsa thiab commissioning tau ua tiav heev thiab peb cov neeg tau txais kev zoo siab nrog peb cov khoom lag luam zoo thiab kev pabcuam. Ua tsaug rau tus neeg siv khoom txhawb nqa.