Core Viewpoint - The article provides a comprehensive overview of the hydraulic industry in China, detailing its supply chain, key players, and regional distribution of companies [1][3]. Industry Supply Chain - The upstream of the hydraulic industry consists of three main categories: steel, components, and working media, with steel supplied by major domestic steel enterprises such as Baosteel, Ansteel, and Hebei Steel [3]. - The midstream includes manufacturing companies like Hengli Hydraulic, Shaoyang Hydraulic, and Aidi Precision, which produce hydraulic motors, pumps, valves, cylinders, and systems [1][3]. - The downstream applications span various large engineering sectors, including construction machinery, aerospace, machine tools, agricultural machinery, automotive, and heavy machinery [1]. Regional Distribution - The hydraulic industry is primarily concentrated in Zhejiang and Jiangsu provinces, with Zhejiang having 5,747 hydraulic enterprises and Jiangsu having 3,999 as of October 2025 [5]. - Notable hydraulic companies in Zhejiang include Hengli Hydraulic and Youweili Hydraulic, while Jiangsu features companies like Aidi Precision and Shaoyang Hydraulic [7]. Representative Companies and Financial Performance - Key companies in the hydraulic sector include Hengli Hydraulic, Shaoyang Hydraulic, and Aidi Precision, with their hydraulic-related revenue exceeding 80% of total revenue [8]. - Financial data for representative companies shows Hengli Hydraulic with a hydraulic business revenue of 9.325 billion and a hydraulic-related business ratio of 99.31% [10]. - Aidi Precision reported a hydraulic business revenue of 2.266 billion, with a hydraulic-related business ratio of 83.15% [10].