Cov tsos mob: ntshiab grey hlau hmoov
Cov mis mos molecular: Mo
Pom tseeb ntom: 0.95 ~ 1.2 g / cm2
Qhov nruab nrab particle loj: 1.5 ~ 5.5 (nrog rau m)
Nco tseg: Lwm hom thiab specification tuaj yeem kho.