... 4) SIMENS PLC Controller 1, Product Name: Nitrogen Machine/ N2 Gas EquipmentA full installation requires air compressor, ... welding, crystal, piezoelectricity, electronic porcelain, electronic copper tape, battery, electronic alloy material, etc. 4, Excellent Energy-saving Features ... technologies ensure reliable gas supply. 11. Friendly human-machine interface. 5, Main Technical Parameters of ZR-3/ ...