Tsoomfwv Indian tab tom txiav txim siab txwv kev xa tawm ntawm plaub qhov tsis tshua muaj hlau - lithium, beryllium, niobium thiab tantalum - nrog lub hom phiaj ntawm kev lav lub teb chaws tus kheej txaus hauv cov peev txheej tseem ceeb. "Tsoomfwv npaj yuav txwv tsis pub xa tawm cov hlau tsis tshua muaj xws li lithium, beryllium, niobium thiab tantalum vim tias lawv ua lub luag haujlwm tseem ceeb hauv kev lag luam hluav taws xob nrog rau kev tiv thaiv kev nyab xeeb hauv tebchaws thiab kev ua tiav thev naus laus zis," said ib tug thawj coj ntawm tsoomfwv Indian.
