精品L103斯米克银焊条
Brazingofcopper,bronzeandsteel,subjectedtolowload.钎焊铜、青铜和钢等受力不大工件Brazingofcopper,bronzeandsteel,subjectedtolowload.钎焊铜、青铜和钢等受力不大工件Brazingofcopper,bronzeandsteel,subjectedtolowload.钎焊铜、青铜和钢等受力不大工件Brazingofcopper,bronzeandsteel,subjectedtolowload.钎焊铜、青铜和钢等受力不大工件)