ZCE Engineer Pab Pawg Ua Cov Castor tsim cov txheej txheem rau cov neeg siv khoom.

Jul 12, 2023Tso lus

ZCE Engineer pab pawg ua cov castor tsim cov txheej txheem rau cov neeg siv khoom.
Ob lub ntsiab lus nruab nrab-kub raw tshuaj, nchuav kub ntawm 50 degree, sib tov piv 1: 1, hardness 98 ntug A