After first stove came with all kind of damages, Amazon sent replace stove right away. Because our main food is steam rice, simmering is very important for me. Some review says flame control is hard or it turn back to full flame after adjust to low. I was really worried about this problem and if I find out this stove has flame control issue as some review, I was going to send it back. Maybe I am lucky or what, second stove was in perfect condition and it looks well constructed and flame controls are very good. No simmering problem at all. Happy with this new stove.