Graphite crucible, tseem hu ua molten tooj liab ladle, molten tooj liab, thiab lwm yam, hais txog ib hom crucible ua los ntawm firing graphite, av nplaum, silica thiab ciab li raw cov ntaub ntawv. Graphite crucibles feem ntau yog siv los smelt tooj liab, tooj dag, kub, nyiaj, zinc thiab txhuas thiab lwm yam non-ferrous hlau thiab lawv tag nrho ...
Nyeem ntxiv