Group 1 - The company Guangdong Hongda (002683.SZ) reported a revenue of 9.15 billion yuan for the first half of 2025, representing a year-on-year increase of 63.83% [1] - The net profit attributable to shareholders of the listed company was 504 million yuan, showing a year-on-year growth of 22.05% [1]

Core Viewpoint - The company, Yipuli Co., Ltd., has announced that its subsidiary, China Gezhouba Group Yipuli Co., Ltd., has signed or commenced execution of blasting service contracts totaling RMB 5.903 billion for the period of April to June 2025 [1]. Group 1: Contract Details - The total amount of newly signed or executed contracts for blasting service engineering is RMB 5.903 billion [1]. - Significant contracts include: - A total construction contract for the granite mining project in Deqing County, Guangdong Province, with a service period of 24 years [2]. - A supplementary agreement for the mining construction contract of the Xinjiang Tianlong Hope Energy Co., Ltd. with a service period of 0.5 years, amounting to RMB 400 million [2][3]. - A drilling and blasting contract for the iron ore mining area in Panzhihua City, with a service period of 3 years [3]. - An EPC and mining service contract for sandstone mining and processing in Wuzhou City, with a service period of 15.56 years [3]. - Another EPC and mining service contract for sandstone mining in Wuzhou City, with a service period of 20.26 years [3].

Core Insights - The article highlights the significant contributions of Feng Shuyu, a renowned engineer and academician in the field of blasting technology in China, who passed away at the age of 101 [1] - Feng's work in the development and application of blasting techniques has played a crucial role in major infrastructure projects, including railways and the Three Gorges Dam [6][7] Education and Early Career - In 1952, Feng Shuyu was among the first students sent to the Soviet Union to study railway construction, where he excelled academically and developed a strong interest in blasting technology [2][3] - His practical experience began during a summer internship in 1954, where he witnessed blasting operations firsthand, solidifying his passion for the field [2][3] Major Contributions - Feng Shuyu applied Soviet blasting methods to the construction of the Yingtan-Xiamen Railway, successfully executing over 20 large-scale blasts, which significantly expedited the project [6] - He led the first directional blasting experiment for dam construction in China, establishing a method that has since been widely adopted in various engineering projects [7][8] Innovation and Research - Feng emphasized the importance of safety and control in blasting techniques, leading to the development of low-power explosives suitable for urban demolition [8] - His research encompassed various blasting methods, including controlled blasting and underwater blasting, contributing to advancements in the field [8] Education and Mentorship - Feng Shuyu dedicated much of his career to training the next generation of blasting engineers, developing comprehensive training programs and textbooks that became standard in the industry [10][11] - He was one of the first to supervise graduate students in blasting technology in China, ensuring that practical experience was a core component of their education [11][12]