Core Insights - A patent titled "A Flame Retardant Diol, Thin Spray Support Material and Its Preparation Method and Application" has been granted to three companies, indicating advancements in material technology [1] - The companies involved include China Coal Technology and Engineering Group (Tianjin) Rock Layer Intelligent Control Technology Co., Ltd., China Coal Technology and Engineering Group Mining Research Institute Co., Ltd., and Tiandi Technology Co., Ltd. [1][2] Company Summaries - **China Coal Technology and Engineering Group (Tianjin) Rock Layer Intelligent Control Technology Co., Ltd.** - Established in 2024, located in Tianjin, with a registered capital of 50 million RMB - Participated in 85 bidding projects and holds 86 patents [1] - **China Coal Technology and Engineering Group Mining Research Institute Co., Ltd.** - Established in 2020, located in Beijing, with a registered capital of 50 million RMB - Invested in 3 companies, participated in 956 bidding projects, holds 1786 patents, and has 10 administrative licenses [1] - **Tiandi Technology Co., Ltd.** - Established in 2000, located in Beijing, with a registered capital of approximately 4.14 billion RMB - Invested in 29 companies, participated in 1972 bidding projects, holds 1890 patents, and has 19 administrative licenses [2]