... (1 year)4,Emergency plan(1),According to your request for maintaining production equipment, active contact should be two months before ... should be self configurated, convenient for halfway use, convenient to change, change with time for 2 minutes.Products mainly parameter table ... -80 DN-65SD-30SDO-20020045ND-95 DN-80SD-45 oxygen making machine operation process 1.Air compressor 2. Air storage tank3. ...