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Kua whakamātau koe ki te tapahi i tētahi pepa kirihou mārama, ā, ka mutu, ka pakaru, ka taratara rānei ngā taha? Kāore koe i te mokemoke. Ahakoa kei te hanga mahi toi-ā-ringa koe, kei te hanga takai, kei te hanga tohu, kei te whakaatu rānei, he mea nui ngā tapahi ma. Me rerekē ngā tikanga mō ngā kirihou rerekē—te kiriaku, te polycarbonate, me te PVC .