Ka Hale Hana Eha
ʻO ka maikaʻi wale nō ke kumu no ka huahana.Pono e hoʻopili i ka manaʻo paʻa a palekana i nā ʻano āpau o ka hana huahana.
Nā Hana Nānā
Nā ʻano hoʻokolohua no ka pale ʻana i ka haʻalulu wela a me ka lōʻihi o nā ipu aniani;ʻO ke ʻano hoʻāʻo GB/T 4548 a me ka hoʻokaʻawale ʻana no ka pale ʻana i ka wai o ka ʻili o loko o ka ipu aniani;ʻO nā palena ʻae ʻia o ke kēpau, cadmium, arsenic a me antimony dissolution i loko o nā ipu aniani;3.1 kūlana maikaʻi no nā ʻōmole aniani
Hoao ikaika
E hoʻokō ʻia ka ʻōmole pōʻai e like me nā ʻōlelo o GB / T 6552. E koho i ka ʻāpana nāwaliwali a i ʻole ka ʻāpana pili o ke kino o ka hue no ka hopena.Hiki ke hana ʻia ka hoʻāʻo ʻano ma ka hoʻohālikelike ʻana i ka hui ʻana a i ʻole ka ʻike ʻana i ka mīkini.
Nānā Laʻana
ʻO ka mua, e helu i ka helu o nā pūʻolo i unuhi ʻia e like me ka 5% o ka huina o nā pūʻolo i kēia pūʻulu waiwai: ua koho ʻia kahi hapakolu o nā helu i koi ʻia mai ka mua, waena a me hope o kēlā me kēia kaʻa, a me 30% - ʻO 50% o nā pūʻolo i koho ʻia mai kēlā me kēia pūʻolo no ka nānā ʻana.