Amid the massive fermentation tanks at Budweiser Foshan Brewery, a set of 8-bar air compressors that ran round the clock have been phased out. Kelupp permanent magnet variable-frequency oil-free screw blowers deliver precise low-pressure air supply at 80 kPa, putting an end to the decade-long high-pressure pressure reduction mode. A heat pump waste heat recovery system also forms a complete energy circulation chain. This seemingly simple equipment replacement represents the global beer giant's in-depth response to the dual carbon goals, cutting compressed air energy consumption in the fermentation workshop by 52%.