Nitrogen is used for packaging, sintering, annealing, reduction and storage of electronic products in the electronic industry. Mainly used in wave soldering, reflow welding, crystal, piezoelectric, electronic ceramics, electronic copper tape, battery, electronic alloy materials and other industries. The electronics industry generally has a high demand for nitrogen, usually 99.99%, and 99.99% or more nitrogen. Atmosphere protection, cleaning, chemical recovery and so on in the manufacturing process of electronic industry, semiconductor and integrated circuit. Nitrogen sources for treatment of lsi, color TV picture tubes, TV and recorder components and semiconductor components.