公司名称：北京首富特种焊接材料有限公司

L302
Wire & rod
丝
745-775
Ag25 Cu40
Zn Rem.
Brazing of copper, copper alloys, steel and stainless steel etc.
钎焊铜及铜合金、钢及不锈钢等
　
L303
Wire & rod
丝
660-725
Ag45 Cu30
Zn余
Brazing of copper, copper alloys, steel and stainless steel etc.
钎焊铜及铜合金、钢及不锈钢等
BAg-5

L303F
Flux coated rod
涂药丝
660-725
Ag45 Cu30
Zn Rem.
L303 coated with flux, the same application as L303.
外涂钎剂的L303，用途与L303相同
BAg-5

L304
Foil
箔
690-775
Ag50 Cu34
Zn Rem.
Brazing of copper, copper alloys and steel etc.
钎焊铜及铜合金、钢等
BAg-6

L308
Wire & rod
丝
779-780
Ag72 Cu Rem.
Brazing of copper and nickel under vacuum or reducing protective atmosphere.
铜和镍的真空或还原保护气氛钎焊