Gulu la Tianjin Rainbow Steel linakhazikitsidwa mu 2000, lomwe lili ku Tianjin City.Rainbow Zitsulo ndi Integrated chitsulo ndi zitsulo ogwira ntchito kanasonkhezereka zitsulo chitoliro, kanasonkhezereka zitsulo ngodya bala, kanasonkhezereka mbiri, kanasonkhezereka zitsulo nyumba zomangamanga Infrastructure, Building Industry, Agriculture ndi New Energy dera.Zogulitsa zathu zapeza satifiketi ya TUV, CE, ISO 9001-2008.Laser kudula, kuwotcherera ndi masitampu workshop zilipo zinthu wamba komanso makonda.