Lianyuan Iron and Steel Group Co., Ltd., Hunan Hualing Lianyuan Iron and Steel Co., Ltd. and Hunan Hualing Lianyuan Steel Plate Co., Ltd. (hereinafter referred to as Lianyuan Iron and Steel) are located in Loudi City, central Hunan Province, at the intersection of Hunan-Guizhou Railway, Luozhan Railway, Shangrui Expressway and Taiao Expressway. Since 1958 was established, Lianyuan iron and steel has been developing and growing after half a century's efforts. Since the Tenth Five-Year Plan, Lianyuan Steel has carried out large-scale technical transformation, and completed 2 million tons of ultra-thin strip steel project and its supporting projects. The annual steel output of the enterprise reaches more than 4.5 million tons, and the total assets reach more than 654.38+0.9 billion yuan. The product structure has realized a major adjustment from special-shaped bar to ultra-thin strip with high technology content and high added value, supplemented by special-shaped bar.

Lian Gang has been ranked among the top 500 industrial enterprises in China for many years. It is a national first-class measurement enterprise and a super credit enterprise. It is the first enterprise in Hunan Province and the fourth enterprise in the domestic steel industry to win the "National Quality Management Award". Passed the certification of ISO9000:2000 quality system, ISO 1400 1 environmental management system, occupational safety and health system and measurement system. "Shuangling" brand hot-rolled ribbed steel bar won the national silver award (the highest award) of similar products for three times and the national gold cup award for physical quality for three times, which is the first batch of inspection-free products in China. In 2003, Grade III ribbed bar won the "Golden Cup Award" for the physical quality of metallurgical products in China. Lian Gang has successively won the titles of "National May 1st Labor Certificate" and "National Home of Model Workers", and Lianggang "Shuangling" brand trademark was shortlisted as "Top Ten Public Cognitive Trademarks in China" and was recognized as "China Famous Trademark" by the State Administration for Industry and Commerce in 2006. At the same time, Lian Gang is also one of the five typical examples of the "three closeness" of the ideological and political work of the national propaganda department in the Communist Party of China (CPC).