Group 1: Product Development and Innovation - Double River Energy has established advantages in natural ester insulating oil, which is characterized by high flash point, high ignition point, natural biodegradability, low carbon footprint, and strong overload capacity, making it an ideal environmentally friendly insulating oil for transformers [2] - The company is actively involved in the national key project for the development of plant-based insulating oil for ultra-high voltage power transformers, with increased R&D investment planned for 2024 [2][3] - The research and development of immersion-type insulating cooling liquid is currently in the experimental verification stage, aimed at broadening product variety and enhancing market competitiveness [3] Group 2: Market Expansion and Applications - The company has successfully entered the commercial aerospace sector, introducing materials, cabinets, connectors, and electromechanical products into the aerospace industry, thereby injecting new momentum into future development [3] - In the international market, the company has successfully penetrated markets in Italy, the USA, Uruguay, Oman, and Algeria, achieving export sales of its full range of products [3] Group 3: Technological Advancements - In collaboration with China Three Gorges Construction Group and China Electric Power Research Institute, the company has developed innovative products such as 750kV cross-linked polyethylene insulated power cable liquid-filled composite terminal and dry-type insulated GIS terminal, which have passed national-level new product technical appraisal [3] - This significant technological breakthrough fills a domestic gap and marks a leading position in the ultra-high voltage cable accessory technology field in China, contributing to the enhancement of the core competitiveness of the country's power equipment manufacturing industry [3]

Group 1 - The core viewpoint of the article is that Changlan Technology's subsidiary, Shuangjiang Energy, is in the experimental validation stage of developing an immersion-type insulated cooling liquid, which is expected to broaden the product range and create more profit points for the company, enhancing its market competitiveness [2] Group 2 - The development of the new cooling liquid is part of the company's strategy to expand its product offerings [2] - The successful implementation of this technology could lead to increased profitability and a stronger market position for the company [2]

Group 1 - The core viewpoint of the article highlights the progress of Shuangjiang Energy's immersion cooling liquid product, which is currently in the experimental validation stage [2] - The product is expected to broaden the company's product range, create additional profit points, and enhance market competitiveness [2]

Group 1: Company Overview - Long Cable Technology Group Co., Ltd. is identified by stock code 002879 and abbreviated as 长缆科技 [1] Group 2: Investor Relations Activity - The investor relations activity was a specific object survey held on November 18, 2025, from 10:00 to 11:00 in the company meeting room [2] - Participants included Huang Ping (Director, Board Secretary, Financial Responsible Person), Liu Lihong (Securities Affairs Representative), and Shang Danni (IR) [2] Group 3: Product Advantages - Double River Energy has established advantages in the natural ester insulating oil sector, characterized by high flash and fire points, natural biodegradability, low carbon footprint, and strong overload capacity [2] - Successful applications of natural ester insulating oil include the world's first 110kV natural ester transformer and a 180 MW offshore photovoltaic project by the Three Gorges Group [2] Group 4: Research and Development - In 2024, Double River Energy increased R&D investment and participated in a national key technology project for plant-based insulating oil for ultra-high voltage transformers [2] - The company is currently testing its immersion-type insulating cooling liquid, which aims to broaden product variety and enhance market competitiveness [3] Group 5: R&D Achievement Transformation - The company emphasizes the industrial application of R&D achievements, showcasing strong technology transfer capabilities [3] - In 2018, the company successfully developed cross-linked polyethylene insulating power cable accessories for 290/500kV and ±525kV, marking a significant breakthrough in higher voltage levels [3] - In 2022, the company achieved notable success in the national grid's centralized bidding for 330kV-500kV series products, indicating the commercial application of these products in urban power transmission networks [3] Group 6: Industry Competition Landscape - The cable accessory industry exhibits a "pyramid" structure in market competition, with a fragmented landscape in the medium and low voltage segments due to lower technical barriers [3] - In the high voltage cable accessory sector, higher technical barriers lead to increased industry concentration, with major competitors including Changyuan Group, Hancable, and foreign firms like Sumitomo and Prysmian [3] - The company is among the few globally capable of independently developing and producing ultra-high voltage cable accessories, positioning itself alongside international leaders in technology [3]