Seven days. The 7-day interview for the resume of Aerospace 509 Investment is because it takes time for Aerospace 509 to review the resume, and it also takes time after passing the review. Shanghai Satellite Engineering Research Institute (509 for short) was established in 1969, which belongs to the Eighth Research Institute of China Aerospace Science and Technology Corporation, and integrates satellite overall design, overall assembly, whole-satellite test and large-scale test.