Ko te Tiriti o Sichuan Seawings Hangarau Co., Ltd, he kaihautū 15 tau te pakeke i ngā ratonga puna, he tatai ki te whakaratonga i ngā rama puna o waho e whai ana i te mahi me te āhua ataahua, e whakawātea ana i ngā ahuātanga wai o waho ki te taumata hou. Ko te rama puna o waho he kaupapa matua hei whakapai ake i te āhua o ngā puna i muri i te rā ki te rā ki te rā, ā, kei te tuku mai te kamupene i tētahi roopu rama puna o waho, mai i ngā rama takotoranga māmā ki ngā pūnaha panonihanga kiriata, katoa i hangaia kia eke hoki ki ngā tikanga o waho. Ko ō rātou iniamu hiko e whanake ana i ngā rama puna o waho e kīhai ana ki ngā pūnaha tapa whakahaere, e whakaae ana i te whakakotua ki ngā neke o te wai, ki te puoro, ki ngā tākarotia rānei, e waihangatia ana ngā wheako whakauru. Ko ngā hua rama puna o waho i hangaia ki ngā matū kounga teitei kia herea te wai, te toka, me ngā irirangi UV, e tiaki ana i te roa o te whakamahinga ki ngā takotoranga o waho. He iti noa, he rite ki te puna mātāpuna o te kāinga, he rite rānei ki te puna o waho mō te hokohoko, ko te rama puna o waho mai i tēnei kamupene i whirihaua kia rite ki te hoahoa puna, me ngā kaihoahoa takotoranga e whakarite ana i ngā āhuatanga matua pērā i ngā tātaku neke, ngā rere arataki rānei. Kei te whai wāhi te rama puna o waho ki te whakamātau whānui ki ō rātou pūnaha whakamātau wai kia whakapai ake i te mārama, te tika o te tae, me te whakamahi pūngao, e tiaki ana kia whai hua te rama puna o waho i ngā āhua ataahua kāore he nui rawa te huinga pūngao. Ko te rōpū hui whai wheako o te kamupene e whakahaere ana i te tā i te rama puna o waho, e tiaki ana i te haumaru me te tātari tātari, e whakapai ai i te rama puna o waho hei tāpiri anō hou ki te katoa o ngā ahuatanga wai o waho.