High Purity Nitrogen Cog Rau Ntog Tshiab Zog Vichle Chaw Tsim Tshuaj

Chav tsev sib cais huab cua tau ua tiav tiav ib zaug thiab ua tiav cov khoom tsim nyog nitrogen gas.Nws muab lub zog lav rau kev tsim hluav taws xob tsheb.