Itsinda rya Tianjin Rainbow Steel Group rifite ubukonje bwuzuye, gukubita no gusudira hamwe nitsinda ryabakozi bafite uburambe.Ibicuruzwa biri muri ASTM isanzwe ya WF beam ibirundo byizuba, ibirundo byubutaka bwa C / U bikonje, ibyuma bifasha gariyamoshi, hamwe na tarke kare ya tarique / imiyoboro izenguruka kubakurikirana izuba hamwe nibice bitandukanye byo gusudira no gusudira.Ibicuruzwa bikoreshwa cyane muri sisitemu yo kwishyiriraho PV, sisitemu ya slar tracker, sisitemu yo kuroba izuba ryuburobyi ans PV yubuhinzi bwubuhinzi, nibindi.