He taputapu whakamātautau te pūnaha whakamātautau āwhina whakarongo i whakawhanakehia motuhaketia e Aopuxin, ā, he mea hanga motuhake mō ngā momo āwhina whakarongo rerekē. E whakamahi ana i te hoahoa pouaka ātete-oro takirua hei whakapai ake i te whai huatanga o te mahi. Ka whakakapia katoatia te whakarongo ā-ringa e te tika o te kimi oro rerekē.
Ka hangaia e Aopuxin ngā taputapu whakamātautau kua whakaritea mō ngā momo taputapu whakarongo rerekē, me te ngāwari ake o te urutau me te whakahaere. Ka tautokohia e ia te whakamātautau i ngā tohu e pā ana ki te taputapu whakarongo i runga i ngā whakaritenga o te paerewa IEC60118, ā, ka taea hoki te tāpiri i ngā hongere Nihokikorangi hei whakamātautau i te urupare auau, te whakapōturi, te whakaata me ētahi atu tohu o te kaikorero me te hopuoro taputapu whakarongo āwhina.