Hei whakapai ake i te whai huatanga o te whakaputanga, he maha ngā wā ka whakamahia e te umanga tukatuka kākahu ngā mīhini tohu taiaho tenimu, ngā mīhini whakairo taiaho taputapu kākahu, te mīhini tapahi taiaho tohu tūnga-aunoa me ērā atu mea. Kotahi te mea e rite ana ki ēnei mīhini katoa, arā, he maha ngā wā ka whakamahia te ngongo taiaho CO2 hei whakakaha. Ina roa te mahi a te ngongo taiaho CO2, ka puta he wera me tango atu i roto i te wā. Koia te take e hiahiatia ai te whakamatao wai hurihuri i roto i te umanga hanga kākahu.
Mō te hanga, kua whakangaohia e S&A Teyu te neke atu i te kotahi miriona yuan mō ngā taputapu hanga, hei whakarite i te kounga o te raupapa o ngā tukanga mai i ngā wāhanga matua (whakamātao) o te pouaka whakamatao ahumahi ki te whakarewa i te pepa whakarewa; mō te mahi kawe taonga, kua whakatūria e S&A Teyu ngā whare putunga kawe taonga i roto i ngā tāone nui o Haina, ā, kua tino whakaitihia te kino nā te kawe taonga tawhiti, me te whakapai ake i te whai huatanga o te kawe waka; mō te ratonga muri-hoko, e rua tau te wā whakamana.
