ʻOku ʻikai fie maʻu ke ʻi ai ha ngaahi loki tufakiʻanga naunau ʻi loto ʻi he ngaahi feituʻu ʻoku fakamoʻoniʻi ai e fakaʻauha, ʻi he ʻikai ngata pe ʻi heʻene hikiʻi hake ʻa e ngaahi meʻa ʻoku hoko ka ʻoku toe fakatuʻutamaki foki.
ʻI he “GB50160-2014 ko hono langa ʻo e ngaahi tuʻunga maluʻi ʻo e afi”, Kalasi ʻoku ʻikai ngofua ke fai ha ako mei hono talitali ʻo e ngaahi ʻofisi pe ngaahi loki tufakiʻanga naunau. ʻI he ngaahi meʻa ʻoku mahuʻinga ai ha loki tufakiʻanga naunau kuo fakatapui, ʻOku totonu ke tuku ia ʻi he tafaʻaki ʻo ha holisi ʻoku ʻi ai ha meʻa mahuʻinga ki hono vahevahe ʻo e holisi ke hoko ko ha fakamoʻoni.
Ngaahi loki pule, ngaahi loki kapineti, pea ʻoku totonu ke tuʻu ʻa e tufakiʻanga naunau fakaʻuhila mo e ngaahi feituʻu ʻoku ʻikai ke ʻi ai ha fakatuʻutamaki, fakapapauʻi ʻoku feʻunga e masini ʻo e malu. ʻI he ngaahi feituʻu ko ʻení, ʻOku fakaʻata ʻa e meʻangaue fakaʻuhila mei he ngaahi fie maʻu ki he fakamoʻoni fakaʻauha. ʻOku ohi lahi ʻa e founga ko ʻeni ʻi he konga lahi ʻo e ngaahi fale kemikale he ʻaho ni.