Ua hāʻawi ʻia nā paipu kila huinahā a me nā ʻāpana huinahā o Tianjin Yuantai Derun Group i ka palapala hōʻoia huahana AAAAA e ka Institute of Metallurgical Industry Planning.

Wahi a nā koi kikoʻī o ka "hoʻomaha hōʻoia" no nā paipu wili ʻehā a me ka huinahā no nā kumu kūkulu, nā paipu kila huinahā a me ka huinahā no nā kumu kūkulu maʻamau, noʻonoʻo piha ke kūlana i ke kūlike o ka maikaʻi, ka manaʻo maikaʻi, ka hōʻoia huahana, nā makana hanohano ma ka pae huahana, ka hiki ke hōʻoia i ka maikaʻi ma ka pae ʻoihana, ka hiki ke hana hou, ka pono o ka ʻoihana, ka pae lawelawe, ka pae ʻike a me nā ʻike ʻē aʻe. Ke kālele nei i ka hoʻoili ʻana i ka hiki ke hōʻoia i ka maikaʻi o ka huahana ʻoihana a me ka waiwai o ka hōʻailona huahana, e hoʻomohala i nā kūlana loiloi ʻepekema, kūpono, holomua a pili, e hāʻawi i ke kumu no ka hana aʻe o ka paipu wili ʻia no ke kumu kūkulu, ka paipu kila wili anu a ʻōwili wela paha i hōʻoia ʻia no ke kumu laulā, e mahi a kūkulu i nā huahana kila "hōʻoia hōʻoia".