Installation of liquid oxygen storage tanks, for example, 1, "special equipment installation, transformation and maintenance of at least 2 copies of the notice"; 2, the original installation license; obtain 1 level of liquid oxygen storage tank installation, transformation and maintenance of licensing qualifications of the unit is allowed to engage in the installation of liquid oxygen storage tanks, transformation and maintenance of the work of obtaining the qualification of the 2 level of licensing qualification is allowed to engage in the maintenance of liquid oxygen storage tanks; obtaining the GC1 level of pressure Pipeline installation license qualification of the unit, or obtain 2 (including 2) or more boiler installation qualification of the unit can be engaged in 1 level of licensing qualification of liquid oxygen tank installation work, do not need to take another liquid oxygen tank installation license qualification; obtain GB class and GC2 and above pressure piping installation license qualification of the unit is allowed to install its associated D liquid oxygen storage tanks; with the qualification of the liquid oxygen storage tank manufacturing unit can be Installation of liquid oxygen storage tanks within the scope of its manufacturing license, with A3-class liquid oxygen storage tank manufacturing license qualification certificate of the unit, you can install all the liquid oxygen storage tanks.