Ua hāʻawi ʻia nā paipu kila i hoʻopaʻa ʻia ʻo Tianjin Yuantai Derun Group i ka hōʻoia huahana AAAAA e ka Institute of Metallurgical Industry Planning.

E like me nā koi kiko'ī o ka "hoʻomaha hoʻomaha" no ka huinahalike a me ka rectangular welded paipu no structural kumu, huinahalike a me rectangular paipu kila no ka maʻamau structural kumu, ka maʻamau comprehensively noonoo i ka quality consistency, quality feedback, product certification, honorary awards at the product level. , hiki ke hōʻoia maikaʻi ma ka pae ʻoihana, hiki ke hana hou, kūpaʻa ʻoihana, pae lawelawe, pae ʻikepili a me nā mea ʻē aʻe. Ke hoʻomau nei i ka hoʻouna ʻana i ka hiki ke hōʻoia i ka maikaʻi o ka huahana a me ka waiwai o ka huahana, e hoʻomohala i nā kūlana loiloi ʻepekema, kūpono, holomua a pili pono, e hāʻawi i ke kumu no ka pae aʻe o ke kumu hoʻolālā welded paipu, ke kumu maʻamau i ʻōwili ʻia a i ʻole ka wela o ka welded steel pipe assured. hōʻoia hōʻailona, ​​hoʻoulu a kūkulu i nā huahana kila "hōʻoia hōʻoia".