Kua whakapainga ngā Taputapu Tāwai Mātātoko i te tiaki me te whakahaere i ngā ara hiko ki ngā wāhi whakawhiti kaha. Mā te whakamahi i te hangarau mātātoko ki ngā VCB, ka taea te whakaiti i ngā koretake me ngā ara poto, nō reira ka iti ake ngā pirangi. Ēnei VCB, mā tō rātou aronga hou, hoahoa compact, iti te hiahia tiaki, me te whakapono, e pai ana mō ngā wāhi whakawhiti kaha hou. Kāore he nui rawa te wāhi e hiahiatia ana e rātou, he mea nui tēnā ki ngā wāhi whakawhiti kaha hou. Mā te toru tekau tau, te Rākau me te Huarahi, ko Zhejiang Greenpower Electric Co. Ltd te kaimahi Rākau me te Huarahi mō ngā VCB e whakaaetia ana hei taumata ao, e āwhina ake ana i ngā kaiwhaiwhai o ngā VCB mō te haumātauranga me te mahi.