Mai ke kaʻina hana ahi, hoʻohui i ka ferric oxide, manganese dioxide kahi hana kuʻuna, ma hope o ke kino a me nā hopena kemika, e hana i kahi silicate paʻa, olakino a palekana ke kino kanaka;mai ka hānau ʻana o nā mea hana seramika kokoke i 20 mau makahiki o ka mōʻaukala, ʻaʻole i...
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