BTA drilling tshuab muaj nuj nqi:
Nqa cov drilling, txee tho txawv txav, thawb tho txawv, hlawv, phom sij.
Kev ntsuas siab ntau tshaj 100 lub hli, koj tuaj yeem tau txais bar khoom, uas yog pab tau. Tshwj xeeb tshaj yog rau cov khoom kim heev.
Xov xwm tseeb
Tiv tauj peb
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Dec 12, 2017
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