Why did Guiyang Hangfa work overtime today?

Does the subject want to ask "why does Guiyang Airlines work overtime every day"? The technical requirements are relatively high. Guiyang Hangfa is a specialized company specializing in precision casting of aero-engine turbine blades, integrating innovative research, product experiment and mass production. Because of its high technical requirements, mistakes are not allowed at work, and employees often work overtime. However, through the continuous efforts and efforts of all employees, the company has made remarkable achievements in the field of aero-engine precision casting blades, and won many awards such as the National Science and Technology Progress Award and the Quality Silver Award. As a professional manufacturer of aero-engine turbine blades and the national precision casting center of complex hollow turbine blades, it shoulders the historical heavy responsibility and mission of supporting high-quality turbine blades for the whole industry.