Nitrogen in electronics, semiconductor industry is mainly used in semiconductor and integrated circuit manufacturing process of atmosphere protection, welding, purging, encapsulation, sintering, annealing, restore, storage, cleaning, chemical recycling, etc.In SMT nitrogen reflow soldering and wave soldering with nitrogen can effectively inhibit the oxidation of solder, enhance the wettability of welding, and speed up the wetting reduce the production of tin ball, avoid bridge, reduce weld defects, get good welding quality.