Hunan Ruihuan Trading Co., Ltd. was established in 2022 with a registered capital of 20 million. It is located next to National Highway 107 in Shendingshan Town, Miluo City, Hunan Province. The company's main business is the wholesale of construction steel, the sales of hardware cables and wires, the manufacture and installation of steel structures, the supporting production of engineering machinery parts, and the supporting of engineering machinery structural parts. It is equipped with laser cutting production lines, steel structure production lines, and structural parts production lines. The electromechanical installation qualification has an experienced R&D team, a professional technical management team, and more than 100 highly qualified technical personnel. It has obtained 12 patent technologies. In 2023, it was recognized as a "high-tech enterprise" by the Provincial Department of Science and Technology, and won honors such as "contract-abiding and trustworthy enterprise" and AAA credit enterprise. In 2024, it passed the ISO9001 quality body certification and has good quality assurance capabilities. There are two holding or joint venture companies, namely Miluo Yichuan Steel Structure Engineering Co., Ltd. and Hunan Longheng New Materials Co., Ltd., both of which have independent production bases. It has a leading advantage in the fields of building steel structure, supporting engineering machinery parts, and bridge steel structure.