Which stainless steel casement fire door lock is better?

  Now all the door locks of shopping malls, apartments, fire-proof access doors, public entrances, etc. all need stainless steel side-opening fire-resistant door locks, so which one is better? The editor suggests that you can refer to Reliance Hardware's RTH-01+RML-20 (50ZL) elbow handle + fire door lock body. The authentic stainless steel 304 material and the advantages of long service life have attracted many engineering companies.