Hunan Renjian Concrete Co., Ltd. was established in April 2010 with a registered capital of 30 million yuan. It is a wholly-owned holding company under Hunan Renjian Enterprise Group. Now it has 6 national patents. In 2018, it obtained AAA-level credit enterprise and green building materials. Evaluation of the double achievements of the logo certificate. Obtained the ISO three-system certification in 2019, and approved the first batch of high-tech enterprises in Hunan Province in 2020. It has been awarded the title of "Promise-keeping Contract Unit" by the Municipal Bureau of Quality Supervision and Concrete Association for many times.