On December 16, 2021, the fluid sensitivity test carried out by our company for two weeks was successfully completed accompanied and witnessed by the technical team of SAIC. The end of this test represents that the ARJ21 aircraft Electronic Flight Packet Data Exchange Unit (EDIU) designed and developed by our company for COMAC has completed all airworthiness subject tests on the ground. At present, our company has been successfully delivered the test prototype to COMAC for installation test, and will continue to deliver formal products according to COMAC's order requirements.