特點：RJ-3熔劑是犧牲陽極熔劑。有良好的覆蓋、精煉能力，尤其是它易於與鎂合金熔體分離。
Characteristic: It is the professional for sacrificial anode.
The flux has good covering and refining ability, especially it is easy to separate from magnesium alloy melt.