Nta: Cov ntsiab lus siab ruaj khov, cov hmoov tshauv tsawg, hluav taws xob siab & thermal conductivity. Tsawg sulfur, tsis tshua muaj porosity thiab cov ntsiab lus tsis hloov pauv. Qhuav, huv si thiab qhov nruab nrab qhov me me
Loj: 0.2-2mm, 1-5mm, 3-8mm, 5-15mmor raws li cov neeg siv khoom xav tau.
Ntim: hauv 25kg hnab me me, 1mt lub hnab loj, lossis raws li tus neeg yuav khoom xav tau.