Since the successful entry into the space station assembly on November 30, 2022, the Shenzhou 15 astronauts' crew has been working and living in orbit for more than two months, and has successively completed the unlocking and testing of scientific experimental cabinets, the unloading of applied load cargo, the patrol inspection of space station and manned spacecraft equipment, and carried out a series of space science experiments (trials). As the chief research and development unit in the field of space station engineering and space technology test, the Fifth Academy of Aerospace Science and Technology Group has configured the space basic test cabinet for the space station Mengtian experimental module, providing mechanical, electrical, thermal, information and other guarantee conditions for various on-orbit loads, supporting the rolling implementation of various test projects in orbit, and providing a strong verification platform for the innovative development of new space technology. The cabinet has been in orbit for more than 3 months, and has successfully carried out functional test and partial load test. At present, the product is in good condition. So, what are the super capabilities of aerospace basic test cabinet (hereinafter referred to as "test cabinet")? Provide users with 13 types of "private customized" space test cabinets with a design life of 15 years, supporting nearly 100 sets of equipment. Considering the upgrading of the cabinet platform capacity during the operation of the space station, the test cabinet structure should meet the conditions for on-orbit replacement of equipment, so that astronauts can complete relevant operations efficiently and quickly. "The cabinet supports on-orbit overturning in design, which can provide astronauts with the best operating position for on-orbit maintenance and repair, and the modular layout design facilitates the upgrading and optimization of the cabinet platform according to the functional zoning." said Yin Zhao, the general deputy director of the space technology test field of the space station of the Fifth Academy of Aerospace Science and Technology Group. With different test loads, the requirements for in-orbit test space are also diversified. To this end, taking into account user needs and modular design has become the best way to solve diversified needs and load interface standardization. It is reported that the structural mechanism subsystem of the test cabinet can provide 13 kinds of test space, install load units in combination according to user requirements, and realize free matching on the track. "Generally speaking, it is to fill the whole cabinet with different types of 'drawers' like Tetris through' private customization 'modular space," Yin Zhao said. During the 15-year service life, the test load needs to be frequently replaced in orbit, and the in-orbit test cycle of different types of test items varies greatly. How to provide sufficient "nutrition" for the test load while facilitating the operation of astronauts? The researchers can generate lightweight spiral cables through 3D printing. While providing sufficient power distribution and information support for the test load, they can also extend the human-machine operation interface out of the cabinet along with the load unit, allowing the astronauts to operate efficiently and visibly, which can be called the "life umbilical" of the test load. The environmental butler load test that controls the temperature of the "building" will generate heat, which requires the thermal control subsystem to manage the temperature of the load environment. "If the test cabinet is compared to a building, then the building can accommodate up to 13 tenants (test load), and the thermal control subsystem is the environmental butler of the building - regardless of its size, its configuration can be low, including ventilation subsystem, liquid cooling subsystem and vacuum subsystem, with a total heat dissipation capacity of not less than 1500 watts." Yin Zhao vividly compared. The thermal control subsystem is equipped with "central air conditioning" for each "room" - ventilation