Can't the door of the cold storage be opened from the inside

Code for design of cold storage (GB? 50072-20 10? Clause 4. 1. 12 in): The refrigerated room with a building area greater than 1000m2 shall be provided with at least two refrigerated doors (including doors on partition walls), and the refrigerated room with an area not greater than 1000m2 may be provided with only one refrigerated door. The inside of the refrigerated door should be equipped with an emergency internal lock device and marked with eye-catching signs.

The installation of emergency internal door lock device in cold storage door is a mandatory clause in the national standard. When the cold storage is designed and installed, there must be a device that can open the door lock from the inside and can be used normally.