IHunan Tuotian Road & Bridge Engineering Machinery Co., Ltd. (lapha ngemuva kokubizwa ngokuthi: Hunan Tuotian) itholakala edolobheni elidumile labavakashi - iChenzhou (Isifundazwe saseHunan), amamins angama-20 kusuka esiteshini sesitimela saseChenzhou Xi High-speed, Amamizuzu ayi-15 asuka eChenzhou Beihu Airport ngemoto. UHunan Tuotian wahlelwa kabusha kusuka kuHunan Long March Road & Bridge Equipment Manufacturing Co., Ltd. kanye neHunan Shenghua Steel Structure Construction Co., I-Ltd, okuyinkampani yesikhungo esingochwepheshe se-Road & Bridge ehlanganisa ukukhiqizwa, ukuthengisa, ukufakwa nokuqeda, izinsizakalo zokugcina nokunakekela. Imikhiqizo eyinhloko ifaka phakathi: 321-Type ibhuloho lomgwaqo omkhulu elifakwe ngaphambili, ibhuloho lomgwaqo omkhulu u-200, Ibhuloho labahamba ngezinyawo emadolobheni, Isikhungo sokwakha esiningi, ipulatifomu yokwakha njalonjalo.