Welina mai i Tianjin Rainbow Steel. Hana mākou i nā huahana kila a i ʻole ke kūkulu kila no ka ʻōnaehana hoʻoinu, ka Solar Mounting Steel Structure, ka hoʻoili ʻana a me ka hoʻolaha ʻana i nā ʻano kila (Towers & Poles), ke kūkulu ʻana, ka ʻoihana, ka Scaffolding a me ke kūkulu ʻana i nā hale kōmahana. Ua hoʻokumu ʻia ʻo Tianjin Rainbow Steel Group i ka makahiki 2000, aia ma ke kūlanakauhale ʻo Tianjin. Ma hope o kekahi mau makahiki o ka hoʻomohala ʻana, ua ulu ʻo Rainbow Steel i kahi ʻoihana hao a me ke kila i hoʻohui ʻia o ka paipu kila galvanized, ka pā kihi kila galvanized, nā ʻaoʻao galvanized, nā ʻano kila, a ʻo mākou nō hoʻi ka hale hana hale kiaʻi kila a me nā pou hoʻoili uila nui loa ma Kina. Loaʻa i kā mākou hui kā mākou wili galvanizing ponoʻī, no laila hiki ke galvanized ʻia nā hana āpau mai kā mākou hale hana ponoʻī. E ʻike i kā mākou laulā huahana metala ākea e pili ana i nā paipu kila, nā kihi hao, nā kaola hao, nā huahana kila perforated, nā ʻano kila Welded, ka hale kiaʻi kila a me nā pou, nā papahana hoihoi, ka ʻike loea ākea a me ka hāʻawi lawelawe kiʻekiʻe.