Hwɛ hu sɛ mmara a ɛne mmara hyia ma wo Amerika nnwuma no ne yɛn Mortise Locks a ɛyɛ adwuma kɛse , a wɔasɔ ahwɛ denneennen sɛnea ɛbɛyɛ a ebedu ANSI/BHMA A156.13 Grade 1 gyinapɛn ahorow ho – U.S. benchmark a ɛkorɔn sen biara ma aguadi hardware adwumayɛ.