... Application:Food packing, Food storing, Electric & Electronic industry, Petro-gas & Oil field, Chemicals & Petro-chemicals, Coal-mine, Metallurgy ... and new material industries: For chemical material gas, pipeline blowing, gas replacement, gas protection, product transport, etc. Used in ... 3000Nm³/h Nitrogen Purity: 95%-99.9995% (95%, 97%, 98%, 99%, 99.5%, 99.9%, 99.99%, 99.999%, 99.9995%) You can be sure ...