Hunan Tuotian Road na Bridge Engineering Machinery Co., Ltd. (a mesịa a kpọrọ ya dị ka: Hunan Tuotian) dị n’obodo a ma ama ndị njem nleta - Chenzhou (ógbè Hunan), mins 20 site na Chenzhou Xi-feed ụgbọ oké ọsọ, Mint 15 site n’ụgbọala n’ụgbọelu ụgbọelu Chenzhou Beihu. A haziri ya na Hunan Tuotian site na Hunan Long March na Bridge Equipment Manufacturing Co., Ltd. na Hunan Shenghua Steel Structure Contructure Co., Ltd, nke bụ́ ụlọ ọrụ ndị ọkachamara Road & Bridge na - emekọ ihe omume, ere, ntụgharị na nzube, nzukọ na nzube ụlọ ọrụ. Ihe ndị bụ́ isi a na - agụnye: 321-Ụdị ụgbọ oké ụgbọ oké ụzọ a kpọrọ n'ụgbọ okpomọkụ, n'ụdị ụgbọ oké ụzọ 200 a na-adị n'ụgbọ oké ụzọ, Ọgbọ mmiri ndị na - eme njem obodo, Ọtụtụ ebe a na - ewu owu ụlọ, nkiri owuwu na ihe ndị ọzọ.