Air Separation Plant 1) N2 Purity: 99- ... Food packing, Food storing, Electric & Electronic industry, Petro-gas & Oil field, Chemicals & Petro-chemicals, Coal-mine ... new material industries: For chemical material gas, pipeline blowing, gas replacement, gas protection, product transport, etc. Used ... and control. 10. Professional technologies ensure reliable gas supply. 11. Friendly human-machine interface. ...