Our #605 is sitable for mixed pth and Smt PCB soldering, Mixed Pth and Smt PCB elect assembly are hard to be soldered as it has to be soldered twice and one fluxing.

Our product is specially designed for this purpose that a perfect soldering result will be obtained .

Besides, Our double wave soldering flux inhered the most important features:

No hygroscopic  and No elect leakage are most essential in the class as apex.