Ntuj magnetite muaj nyob rau hauv cov hmoov zoo, cais raws li mesh 325 nrog hais txog 45 micron los yog me dua. Ntuj magnetite yog nyob rau hauv cov xim dub tsaus thiab nws yog cov hlau nplaum heev.
Cov ntawv tseem ceeb: thee ntxuav, hnyav nruab nrab thiab kho dej.
KHOOM PLIG
25kg / hnab, 1000kg / hnab, lub pob tuaj yeem ua raws li tus neeg yuav khoom xav tau.
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