Ko ngā Kapurī Mātai Rīwhi Injana (GIRMUs) kei te mahi he waahanga matua ki ngā punaha tukanga hiko o nāianei, āhuatia i ngā tāone e iti ana te wāhi. Ka tukuna e ēnei kapa i te hiko ki te haumaru, ki te maroke hoki mā te hangarau mātai injana. Mā te whakauru i te hangarau mātai injana, kua hoahoa ngā GIRMUs ki te aronga ki te whakangahau. Ko ngā GIRMUs i hangaia e Zhejiang Greenpower Electric Co., Ltd e ū ana ki ngā tīmata o IEC me IEEE, ka whakaatu i tā mātou whakapono ki ngā ratonga hou mō ngā hiahia rerekē.