Cov Khoom Siv Ua Khoom Siv Geophysical

Txais tos rau kev lag luam wholesale khoom pheej yig geophysical rau muag ntawm no los ntawm cov kws tshaj lij geophysical cov tuam ntxhab thiab cov muag khoom hauv Suav Teb. Txog kev sib tham ntawm tus nqi, tiv tauj peb.