Cem phaj ntsaws
Cementing plugs yog nrov heev hauv kev lag luam roj av {{}}} Cov teeb meem ntawm cov cement tau siv rau hauv cov txheej txheem xis mas, hauv qab cementing ntsaws thiab sab saum toj cementing plug . Qhov tseeb ntawm cov neeg tuaj yeem ua haujlwm ntau dua li ib qho kev lag luam dav hauv qhov kev lag luam dav no hauv qhov kev lag luam dav no hauv qhov kev lag luam dav no
Peb yog cov kev ua yeeb yam Plug Plug tsim thiab cov muag khoom hauv Suav, tshwj xeeb hauv kev yuav cov khoom lag luam zoo thiab ua kom sov siab rau cov kev sib tham zoo, tiv tauj peb.