When welding Yttric Tungsten Electrode，it put up acerose arc，more compress extent，deeply melt when mid or big current .At present serves for military affairs and aero industry。 Mulriple multi-Tungsten Electrode add two or more lanthanon oxid into the tungsten radicel，diversified additive element bring out the best in each other，bring out the excellent capability of Mulriple multi-Tungsten Electrode.

Type	Composition				Color Mark
	Dioxide	Dioxide%	Impurities %	W %
WY20	YO2	1.80-2.20	≤0.02	余量Remainder	天蓝Sky blue