Vim li cas txhuas ua ntej siv rau npib?
Txhuas yog thawj saws rau npib nyob rau hauv thaum ntxov xyoo pua 20}} Nws siv lub teb chaws tsis txaus siab rau cov tebchaws uas tsis muaj peev xwm rov qab hais txog cov tebchaws. nws tseem nrov rau cov qes qis-denomination npib .
Aluminium piv tau tooj liab-npib tsib xee nyob rau hauv coinage?
Aluminium yog 60% sib dua dua li cov tooj liab-Nickel, txo cov nqi thauj khoom {}}}}} lee aline alins aluminium npib yog ntau tshaj plaws rau Dabtsi Yog Khoov Thiab Nto Scses . Cov ntaub ntawv ua haujlwm zoo nrog anti-counterfeard ntug cim ....
Dab tsi yog qhov kev sib tw tseem ceeb hauv Minting Alins?
Aluminium lub softness yuav tsum tau txo qis kev siv kom tsis txhob tuag cov hluav taws xob tuag taus tuag ua ke tag kis thaum muaj cov hlua khi khov kho kom sib xyaw ua ke hais txog durability .
Cov teb chaws twg tam sim no siv aluminium npib?
Ltalis 1-5}} Cov Npib-Brazil { 1- rupee npib sib xyaw ua ke nrog npib tsib xee .}}}} {} {{{}
Yuav ua li cas yog rov ua dua txhuas siv nyob rau hauv cov khoom siv niaj hnub tsim?
Rov ua dua cov kev txuag 95% siv zog tiv thaiv thawj zaug, ib lub pob zeb txhuas Kev sib nqus sib nqus ua kom muaj kev coj dawb huv los ntawm kev tshem tawm cov hlau tsis huv-Viav rov qab 90% ntawm scrap thaum minting .
