Hunan Renjian Baogu High-tech Development Co., Ltd. was founded in 2012, located in Changsha Jinxia Economic Development Zone, is the first professional high-tech environmental protection large-scale building materials production enterprise in Hunan Province integrating product research and development, production and sales and logistics services.

         After years of investment, development, quality improvement and innovation, Renjianbaogu has grown into a national high-tech enterprise with an output value of more than 100 million, and has won a number of honorary titles. Including Hunan specialty specialty new small giant enterprise, Hunan new material enterprise, Changsha Small giant Enterprise, Changsha Special mortar Technology Innovation Center, 2023 National advanced mortar green industry enterprise, "Green construction" Doctor workstation set up by Changsha Municipal Housing and Construction Bureau, Changsha Municipal Housing and Construction Bureau green construction "Specialty specialty new" support enterprise and Changsha intelligent construction industry Base support enterprises, etc.

         The company has four production lines with an annual capacity of more than 1 million tons. The main products include special reinforcement material series, soil curing agent series, ceramic tile binder series, dry mortar series, aerated block special mortar series and inorganic mixture series.

          In recent years, the company has deepened reform, paid attention to scientific and technological innovation, and has invested more than 20 million yuan to set up a professional technical team composed of many experts and professors from Central South University, Hunan University, Changsha University of Science and Technology, Hunan Transportation Vocational and Technical College, etc. The university has established a university-production research base, a high-tech central laboratory, a solid waste comprehensive research and development center and a steel slag resource utilization technology central laboratory to jointly explore and develop new building materials. At present, the company has successfully developed "five new technologies" : UHPSC ultra-high performance concrete injection construction complete set technology, self-dense fluid solidified soil construction technology, 1.5 cm ultra-thin noise reduction epoxy asphalt wear layer technology, cement-based nano penetration crystal waterproof construction technology, gypsum based road water stability layer application technology. These technologies have been successfully applied in tunnel rescue reinforcement construction, urban trenchless underground pipe network restoration and reinforcement construction, highway bridge reinforcement, ancient building restoration and reinforcement, among which UHPSC ultra-high performance spray concrete construction application technology has reached the world advanced level.

         The company pays attention to the summary and transformation of scientific and technological achievements. At present, 12 technical achievements have obtained invention patents and utility model patents, 5 patent applications have been accepted by the State Intellectual Property Office, and 36 technical achievements are being declared for patents. In addition, the company edited the Hunan provincial local standard "Ultra-high performance Shotcrete application Technical Regulations" and the group standard "High performance Shotcrete application Technical Regulations".