Tianjin Rainbow Steel Group i whakaturia i 2000, kei roto i Tianjin City.Ko te Rainbow Steel he hinonga rino me te maitai o te putorino maitai piauau, pae koki maitai piauau, porohita piauau, hanganga rino piauau mo te Hanga Hanganga, Ahumahi Whare, Ahuwhenua me te rohe Pungao Hou.Kua whiwhi a maatau hua te tiwhikete o TUV, CE, ISO 9001-2008.Ko nga awheawhe tapahi taiaho, he paihere me te kuini e waatea ana mo nga taonga noa me te whakarite.