Yes The reinforcement of 12cm is marked with E, and the reinforcement with suffix E indicates that it belongs to seismic reinforcement, and it will have a relatively large bearing capacity when it bears seismic load. As long as the steel can meet the seismic requirements, it can be marked with E to indicate its seismic capacity. 12e steel bar is the national standard third-class steel bar seismic 12mm rebar epoxy coated steel bar. So 12 steel bar is seismic.