Lub ntsiab yam tseem ceeb uas cuam tshuam rau tus nqi ntawm hluav taws xob cua sov raj yog:
Jan 06, 2023
Tso lus
(1) Cov khoom siv sab hauv: magnesium oxide hmoov, hlau tsis kam
(2) Cov khoom siv sab nraud: cov khoom siv plhaub, seb puas yuav tsum tau kho tshwj xeeb
(3) Qhov nyuaj ntawm cov txheej txheem ntau lawm
(4) Tus nqi qis
(5) Kev yuav khoom kom muaj nuj nqis
(6) Cov qauv tsim (rau qhov cuam tshuam ntawm cov qauv tsim ntawm tus nqi ntawm cov khoom siv hluav taws xob cua sov, thov xa mus rau: Kev cuam tshuam ntawm kev tsim cov khoom siv hluav taws xob cua sov ntawm tus nqi hluav taws xob cua sov raj)
(7) Cov yam ntxwv ntawm cov neeg muag khoom
(8) Lwm yam tshwj xeeb
