50×50 standing cooker refers to a freestanding cooker/range that is 50 cm wide and approximately 50 cm deep — ideal for compact kitchens or spaces with limited room.
The “3+1” part means it has:
3 gas burners (for everyday stovetop cooking)
1 electric hotplate (useful when gas runs out or for steady heat)
This dual‐fuel design gives flexible cooking options.