This letter is to inform you that we have lately obtain a patent for an improved method of aluminumsolder.
我们改进的铝焊接法最近获得专利权，特此函告。
2
Solder factory is mainly engaged in the production and marketing of products, aluminum copper alloy brazing flame or high-frequency brazing material.
本厂主要从事焊锡制品的生产和销售，铝铜合金的火焰钎焊或者高频钎焊材料。
3
The selective soldering process offers opportunities to make solder connections on different levels, connecting housing, junction boxes, aluminum parts, stacking PCB's and more.