Cov hlau tsis muaj hlau yog cov khoom siv tseem ceeb thiab cov cuab yeej cuab tam tseem ceeb rau lub teb chaws kev lag luam, tib neeg lub neej txhua hnub, thiab kev txhim kho kev lag luam tiv thaiv hauv teb chaws thiab kev tshawb fawb thiab thev naus laus zis. Agricultural modernization, industrial modernization, tiv thaiv lub teb chaws, thiab modernization ntawm science thiab technology tag nrho cia siab rau nonferrous hlau. Piv txwv li, cov khoom siv thiab cov khoom uas xav tau rau kev txiav - riam phom xws li dav hlau, cuaj luaj, foob pob hluav taws, satellites, thiab nuclear submarines, nrog rau cov thev naus laus zis xws li atomic zog, TV, kev sib txuas lus, radar, thiab khoos phis tawj, feem ntau yog ua los ntawm lub teeb thiab tsis tshua muaj hlau los ntawm cov hlau tsis muaj hlau. Tsis tas li ntawd, tsis muaj cov hlau tsis muaj hlau xws li npib tsib xee, cobalt, tungsten, molybdenum, vanadium, thiab niobium, kev tsim cov hlau alloy yuav ua tsis tau. Cov hlau tsis muaj hlau kuj tseem siv tau rau hauv cov khoom tseem ceeb hauv qee yam kev siv, xws li kev lag luam fais fab. Ntau lub teb chaws thoob ntiaj teb, tshwj xeeb tshaj yog cov teb chaws tsim kev lag luam, tab tom sib tw los tsim lawv cov kev lag luam hlau nonferrous thiab nce lawv cov tswv yim reserves ntawm nonferrous hlau.
Cov hlau tsis muaj hlau tau dhau los ua cov khoom siv tseem ceeb rau lub teb chaws kev lag luam, kev tshawb fawb, thiab kev tsim kho thev naus laus zis, nrog rau kev tiv thaiv hauv tebchaws. Lawv yog cov cuab yeej tseem ceeb rau kev txhim kho lub teb chaws lub zog muaj zog thiab tiv thaiv kev ruaj ntseg hauv tebchaws. Raws li lub ntiaj teb cov neeg tsim khoom loj tshaj plaws ntawm cov hlau tsis muaj hlau, kuv lub teb chaws tau ua tiav cov txiaj ntsig zoo hauv kev tshawb fawb hlau nonferrous, tshwj xeeb tshaj yog nyob rau hauv kev txhim kho thiab kev siv cov complex, qis- qib nonferrous hlau.
