DING LONG(SZ:300054) Sou Hu Cai Jing·2025-06-10 06:41Group 1 - Hubei Dinglong Huisheng New Materials Co., Ltd. and Hubei Dinghui Microelectronics Materials Co., Ltd. have obtained a patent for "a grinding cloth and its preparation method" with the announcement number CN118721015B, applied on July 2024 [1] - Hubei Dinglong Huisheng New Materials Co., Ltd. was established in 2019, primarily engaged in the manufacturing of electrical machinery and equipment, with a registered capital of 200 million RMB [1] - Hubei Dinglong Huisheng New Materials Co., Ltd. has participated in 9 bidding projects and holds 25 patents, along with 65 administrative licenses [1] Group 2 - Hubei Dinghui Microelectronics Materials Co., Ltd. was established in 2015, primarily engaged in the manufacturing of chemical raw materials and products, with a registered capital of approximately 109.47 million RMB [1] - Hubei Dinghui Microelectronics Materials Co., Ltd. has invested in 3 companies, participated in 14 bidding projects, and holds 5 trademarks and 74 patents, along with 23 administrative licenses [1] Group 3 - Hubei Dinglong Holdings Co., Ltd. was established in 2000, primarily engaged in capital market services, with a registered capital of approximately 938.28 million RMB [2] - Hubei Dinglong Holdings Co., Ltd. has invested in 27 companies, participated in 36 bidding projects, and holds 34 trademarks and 234 patents, along with 58 administrative licenses [2]