Jera mkpuchi Idupu njikọta ule usoro dabeere CENELEC, EN 50483-4: 2009, DL / T 1190 - 2012, NFC 33-020, na anyị na-eji followings ụkpụrụ ule ibiere na-eme quality ule na na mmepụta, iji anyị na ahịa nwere ike ngwaahịa na kwekọrọ n'ụzọ ụkpụrụ.
