teeb meem xav tau kev saib xyuas:
1. Cov khoom no tuaj yeem sib xyaw nrog cov tshuaj tua kab nruab nrab thiab acidic thiab cov chiv (tshwj tsis yog cov txwv tsis pub sib xyaw).
2. Khaws cov khoom no rau hauv qhov chaw txias, qhuav nrog lub txee lub neej ntawm tsib xyoos.
3. Cov khoom no yog cov khoom siv high-purity, thov tsis txhob nce qhov ntau npaum li cas.
4. Cov khoom no muaj qhov nqus dej noo, tab sis nws tsis cuam tshuam rau qhov zoo thiab kev siv tau zoo.
Txoj kev khaws cia:
1. Nws yuav tsum tau muab khaws cia rau hauv qhov chaw cua, qhuav, txias, thiab huv warehouse, thiab lub ntim yuav tsum tau muab kaw thiab noo noo-pov thawj.
2. Tsis txhob khaws lossis sib xyaw nrog cov tshuaj lom thiab lwm yam kuab paug thaum thauj.
3. Thaum lub sij hawm thauj mus los, nws yuav tsum tau tiv thaiv los ntawm nag thiab tshav ntuj ncaj qha. Ua tib zoo saib xyuas thaum thauj khoom thiab tshem tawm kom tsis txhob ntim khoom puas.
4.Thaum hluav taws kub hnyiab, dej, xuab zeb, thiab ntau yam hluav taws tua hluav taws tuaj yeem siv los tua nws.