I do not advise buying this product, there is nothing to praise here.
I asked the manufacturer's manager to describe how this model differs from the GA 5030 before I made a purchase.
There was no mention of a full-length button in the response I didn't understand, so I'll try again.
Pros
For those who make the most of their hands: theoretically, the key stops the power as soon as it is released.
Cons
Start key is incredibly inconvenient. Both a gentle start and a key lock are absent. The key cannot be fixed by itself. I inquired at the repair center about the availability of such start buttons, and they advised me to place an order and wait for it to arrive from Hong Kong.