Hui kila ʻānuenue ʻo TianjinUa hoʻokumu ʻia i ka makahiki 2000, aia ma ke kūlanakauhale ʻo Tianjin. Me ka hoʻomohala ʻana o nā makahiki he 20 i hala iho nei, ua lilo ʻo Rainbow Steel i ʻoihana hao a me ke kila i hoʻohui ʻia o ka paipu kila galvanized, ka pā kihi kila galvanized, nā ʻaoʻao galvanized, nā hale kila galvanized no ke kūkulu ʻana i nā ʻoihana, ka ʻoihana hale, ka mahiʻai a me ka ʻāpana ikehu hou. ʻO mākou nō hoʻi ka mea hana hale kiaʻi kila hoʻoili uila nui loa ma ka ʻĀkau o Kina. Loaʻa i ka Rainbow Steel Group kekahi mau lālā e pili ana i nā laina hana kila, ka ʻoki kila, ka hana kuʻi a me ka stamping, ka wili galvanizing a me ka hale mālama nui. Loaʻa i kā mākou hui nā ʻenehana hana, nā ʻike hana, nā hiki ke hana ʻenekinia a me nā lako holomua. He akamai a paʻahana ko mākou poʻe. ʻO kā mākou huahana lawe nui aku he mau paipu kila galvanized, nā hana o nā hale kila a i ʻole nā ​​​​hana frame, ka pā kihi hao galvanized, ka pā pālahalaha, nā kahawai hao a me nā kaola, nā ʻaoʻao kila a me nā hana kila ʻē aʻe e pono ai ka hana hou ʻana. Me ka hoʻomohala ʻana o ke kūlana honua, ua kūpaʻa ʻo Rainbow Steel e hoʻomohala i nā ʻenehana hou a me ka lawelawe maikaʻi loa e hoʻokō i nā pono ikehu lā e ulu nei. Loaʻa i kā mākou hui ma mua o 10 mau makahiki o ka ʻike a me nā hihia holomua ma ka ʻoihana hoʻouka lā (bracket solar). Ua loaʻa i kā mākou huahana ka palapala hōʻoia o TUV, CE, ISO 9001-2008 a pēlā aku. Loaʻa nā hale hana ʻokiʻoki laser, kuʻihao a me nā mea hoʻopaʻa no nā waiwai maʻamau a maʻamau.