Txawm hais tias khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob. Qhov laj thawj tseem ceeb vim li cas tib neeg hu cov kaus poom tas li "Tins" tuaj yeem rov qab mus rau lub xyoo pua 20th lig. Tom qab ntawd, cov kaus poom tau tsim tawm ntawm cov tin-plated steel txhawm rau ua ke lub zog thiab kev pheej yig ntawm cov hlau nrog corrosion kuj ntawm tin.
Niaj hnub no, cov kaus poom khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob Qhov no tuaj yeem ua los ntawm txhuas mus rau hlau lossis hlau. Txawm hais tias tsis tas li, cov kaus poom me me no feem ntau tuaj nrog tin-plating. Puas tau txij li xyoo 1960, txhuas tau dhau los ua tus naj npawb ib qho kev xaiv rau kev tsim cov kaus poom me me. Yog vim li cas tom qab qhov no nyob rau hauv qhov tseeb tias nws yog pheej yig dua thiab yooj yim rau kev tsim. Ua tsaug rau qhov no, cov txheej txheem tsim khoom tau dhau los ua tus nqi qis thiab siv sijhawm tsawg dua piv rau yav dhau los. Aluminium yog paub tias muaj tib lub zog tiv thaiv corrosion uas ua rau nws hloov zoo meej. Yog xav paub ntxiv txog vim li cas kev lag luam tau hloov mus rau txhuas, thov mus saib cov ntawv blog no ntawm qhov sib txawv ntawm cov kaus poom thiab cov kaus poom txhuas.
Yog vim li cas vim li cas cov kaus poom khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob Txawm hais tias nws raug suav hais tias yog "cov hlau zoo sib xws" es tsis yog "cov hlau muaj txiaj ntsig" zoo li kub lossis platinum, nws tseem muaj tsawg dua li koj xav. Qhov tseeb, tin kuj tseem yog ib qho ntawm cov khoom siv tsawg tshaj plaws "hom" hlau tawm muaj. Nws muaj tseeb hais tias nyob rau hauv lub ntiaj teb no tsuas muaj tsawg tsawg mines uas tsim tin. Cov kws tshawb fawb tseem tab tom mus deb npaum li kev kwv yees tias, yav tom ntej, yuav muaj kev pheej hmoo siab uas peb tau khiav tawm ntawm cov tin tag nrho.
Vim yog cov laj thawj saum toj no, nws yuav kim heev thiab nyuaj los tsim ib yam dab tsi tawm ntawm cov tin ntshiab. Qhov no yog qhov tshwj xeeb tshaj yog rau cov khoom siv niaj hnub xws li cov khoom ntim khoom. Raws li niaj hnub no (Lub Yim Hli 2017), tus nqi ntawm cov tin yog US $ 20.61 ib kilogram whereas txhuas tsuas yog nqi US $ 2.1 ib kilogram. (LME, 2017) Raws li koj tuaj yeem xav, qhov sib txawv ntawm tus nqi loj no tau ua rau lub fact tias cov tuam txhab tsim lawv cov tins tawm ntawm cov hlau sib txawv. Feem ntau cov kaus poom uas niaj hnub tsim tawm yog ua los ntawm txhuas lossis lwm yam khoom pheej yig.