1, The ngwá ụlọ nwere ike kewara n'ime ime ụlọ ngwá ụlọ, ụlọ ọrụ ngwá ụlọ na n'èzí ngwá ụlọ dị ka ngwa dịruru ná njọ.
2, The ngwá ụlọ nwere ike kewara n'ime nwa ngwá ụlọ na okenye ngwá ụlọ dị ka ọrụ.
3, The ngwá ụlọ nwere ike kewaa oche, tebụl, kabinet wdg dị ka ngwaahịa udi.
4, The ule ụzọ na ụkpụrụ e zoro aka na si European Standard, ie BS EN-1728, BS-EN12520, BS-EN12521, BS EN-1730, BS EN-1022, EN-581, EN-1335, EN527.