1、 Overall operation of the civil explosive industry In December 2023, the civil explosive industry successfully achieved its annual target, showing a steady growth in economic indicators, stable demand for explosive varieties, comprehensive replacement of electronic detonators, and a monthly decrease in main material prices. 1. Production enterprise situation In December, production enterprises completed a GDP of 3.471 billion yuan, a year-on-year decrease of 2.35%; The total sales value was 3.447 billion yuan, a year-on-year decrease of 1.42%. In December, production enterprises achieved a main business revenue of 5.155 billion yuan, a year-on-year increase of 3.13%; Realized a total profit and tax of 1.005 billion yuan, a year-on-year increase of 4.92%; Realized a total profit of 585 million yuan, a year-on-year decrease of 15.34%; Realized a revenue of 3.329 billion yuan from blasting services, a year-on-year increase of 21.73%. From January to December, production enterprises completed a total GDP of 43.658 billion yuan, a year-on-year increase of 10.93% (see Figure 1); The cumulative total sales value completed was 43.448 billion yuan, a year-on-year increase of 11.73%. From January to December, production enterprises achieved a cumulative main business revenue of 49.951 billion yuan, a year-on-year increase of 14.19%; The cumulative total amount of profits and taxes achieved was 11.712 billion yuan, a year-on-year increase of 39.97%; The cumulative total profit achieved was 8.527 billion yuan, a year-on-year increase of 44.99% (see Figure 2); Accumulated revenue from blasting services reached 33.804 billion yuan, a year-on-year increase of 6.80%. 2. Sales enterprise situation In December, sales enterprises completed a total purchase value of 1.859 billion yuan for civilian explosive products, a year-on-year increase of 3.50%; The total sales value of civil explosive products reached 2.146 billion yuan, a year-on-year increase of 10.84%. In December, sales enterprises achieved a total profit and tax of 176 million yuan, a year-on-year decrease of 1.83%; Realized a total profit of 72 million yuan, a year-on-year decrease of 42.43%; Realized a revenue of 109 million yuan from blasting services, a year-on-year decrease of 13.31%. From January to December, sales enterprises completed a total purchase value of 18.373 billion yuan for civil explosive products, a year-on-year increase of 11.54%; The total sales value of civil explosive products reached 21.74 billion yuan, a year-on-year increase of 10.83%. From January to December, sales enterprises achieved a total profit and tax of 2.441 billion yuan, a year-on-year increase of 22.01%; Accumulated total profit of 1.723 billion yuan, a year-on-year increase of 20.97%; Accumulated revenue from blasting services reached 1.147 billion yuan, a year-on-year decrease of 10.79%. 3. Main material price In December, the price of powdered ammonium nitrate was 2841 yuan/ton, a year-on-year decrease of 7.98% and a month on month increase of 0.57%; The price of porous granular ammonium nitrate was 2936 yuan/ton, a year-on-year decrease of 7.72% and a month on month increase of 0.20%; The price of liquid ammonium nitrate is 2699 yuan/ton, a year-on-year decrease of 8.20% and a month on month increase of 0.45%. From the price changes of major ammonium nitrate varieties throughout the year, the overall price shows a downward trend, with an average price of 2913 yuan/ton. (Please refer to the monthly changes in ammonium nitrate prices in the attached figure for details) 2、 Completion status of major civil explosive products ONE. Production (purchase), sales, and inventory of main products In December, the production and sales of industrial explosives by manufacturing enterprises were 402500 tons and 416800 tons, respectively, an increase of 1.09% and 3.99% year-on-year; Among them, the on-site mixed explosive production was 1400000 tons, an increase of 7.20% year-on-year. The production and sales of industrial detonators by manufacturing enterprises were 70 million and 71 million, respectively, an increase of 19.12% and 13.06% year-on-year. In December, the purchase and sales of industrial explosives by sales enterprises were 147000 tons and 147500 tons, respectively, an increase of 4.06% and 10.76% year-on-year; The purchase and sales of industrial detonators by sales enterprises were 38 million and 35 million, respectively, an increase of 7.90% and 15.90% year-on-year. From January to December, the cumulative production and sales of industrial explosives by production enterprises were 4.581 million tons and 4.5819 million tons, respectively, an increase of 4.34% and 4.62% year-on-year (see Figure 3). Among them, the cumulative production of on-site mixed explosives was 1.6397 million tons, an increase of 10.76% year-on-year. The cumulative production and sales of industrial detonators by manufacturing enterprises were 724 million and 729 million, respectively, a year-on-year decrease of 10.06% and 10.54% (see Figure 4). From January to December, the cumulative purchase and sales of industrial explosives by sales enterprises were 1.57 million tons and 1.5796 million tons, respectively, an increase of 2.66% and 4.33% year-on-year; The cumulative purchase and sales of industrial detonators by sales enterprises were 370 million and 378 million, respectively, a year-on-year decrease of 15.81% and 14.21%. In terms of inventory, at the end of 2023, the total inventory of industrial explosives in production enterprises was 62600 tons, a year-on-year decrease of 1.73%; The inventory of industrial detonators was 49 million rounds, a year-on-year decrease of 9.26%. The total inventory of industrial explosives in sales enterprises was 26200 tons, a year-on-year decrease of 35.78%; The inventory of industrial detonators was 41 million rounds, a year-on-year decrease of 22.64%. TWO. Changes in year-on-year production of main product varieties From the changes in the production of industrial explosives, the total production of industrial explosives in 2023 was 4.581 million tons, and the proportion of production of various varieties remained basically the same as last year. In 2023, the production of gel emulsion explosives was 2.7884 million tons, an increase of 4.40% year-on-year; The production of gel emulsion explosives accounts for 60.87% of the total explosive production, which is the same as the same period last year. In 2023, the production of porous granular ammonium oil explosives was 1.0312 million tons, an increase of 5.38% year-on-year; The production of porous granular ammonium oil explosives accounts for 22.51% of the total explosive production, an increase of 0.2 percentage points compared to 2022. The total production of powdered explosives in 2023 was 682800 tons, an increase of 2.77% year-on-year. Among them, the cumulative production of expanded ammonium nitrate explosive was 329200 tons, an increase of 5.19% year-on-year. The proportion of expanded ammonium nitrate explosive production to the total explosive production was 7.19%, an increase of 0.1 percentage points compared to 2022; The cumulative production of powdered emulsion explosives was 21.77 tons, a year-on-year decrease of 6.62%. The production of powdered emulsion explosives accounted for 4.75% of the total explosive production, a decrease of 0.6 percentage points compared to 2022; The cumulative production of modified ammonium oil explosives reached 135900 tons, a year-on-year increase of 14.91%. The production of modified ammonium oil explosives accounted for 2.97% of the total explosive production, an increase of 0.3 percentage points compared to 2022. From the changes in the production of industrial detonator varieties, the total production of industrial detonators in 2023 was 724 million rounds, of which electronic detonators have been fully replaced. In 2023, the production of electronic detonators was 670 million rounds, a year-on-year increase of 94.89%, accounting for 92.54% of the total production of detonators, an increase of 50 percentage points compared to 2022; The production of detonator tubes was 33 million rounds, a year-on-year decrease of 89.57%. The production of detonator tubes accounted for approximately 4.56% of the total production of detonators, a decrease of 34 percentage points compared to 2022; The production of industrial electric detonators was 21 million rounds, a year-on-year decrease of 84.94%. The production of industrial electric detonators accounted for about 2.90% of the total production of detonators, an increase of 15 percentage points compared to 2022; The production of magneto electric and other special purpose detonators is 40000 rounds, accounting for less than 0.01%. THREE、Geographical distribution of annual production of industrial explosives and industrial detonators 1. Industrial explosives In 2023, 18 provinces in China achieved a year-on-year positive increase in industrial explosive production, with Xinjiang, Guizhou, Guangdong, and Hebei provinces experiencing an annual production increase of over 10%; The annual production of industrial explosives in the other 12 provinces has decreased to varying degrees compared to the same period last year, with Jiangsu, Ningxia, and Chongqing experiencing an annual production decline of over 10%. In terms of total production, in 2023, there are 5 provinces with an annual industrial explosive production exceeding 250000 tons, namely Inner Mongolia, Shanxi, Xinjiang, Sichuan, and Liaoning. Among them, Inner Mongolia's annual explosive production is 620000 tons, accounting for 13.6% of the industry's total production, continuing to maintain the top position in the industry. 2. industrial detonator In 2023, there were 14 provinces with a positive increase in annual production of industrial detonators, among which Xinjiang, Ningxia, Jilin, and Henan provinces saw an annual production increase of over 50%; The annual production of detonators in the other 12 provinces has decreased to varying degrees, with 2 provinces experiencing a decrease of over 40%, namely Anhui and Shanxi. In terms of total output, the provinces with an annual industrial detonator production exceeding 50 million rounds in 2023 include Sichuan, Liaoning, Shanxi, Henan, Hunan, and Yunnan. FOUR、 Attached Figures/Tables（1-4） Distribution chart of monthly completion status of main indicators in the attached figure Appendix 1 Summary Table of Production, Sales, and Inventory of Main Varieties of Civil Explosive Products in 2023 Appendix 2 Ranking Table of Gross Domestic Explosive Production and Sales in 2023 (Unit: 100 million yuan) Appendix 3 Ranking Table of Total Production, Sales, and Inventory of Industrial Explosives for Civil Explosives in 2023 (Unit: 10000 tons) Appendix 4 Ranking Table of Total Production, Sales, and Inventory of Industrial Detonators for Civil Explosives in 2023 (Unit: Yifa)

On June 16th, the reporter learned from China Communications Second Highway Engineering Bureau Co., Ltd. (hereinafter referred to as "CCCC Second Highway Engineering Bureau") that the mechanized mixed explosive technology developed by the bureau has successfully completed phased tests for application in tunnels, and can accurately control the density of mixed emulsion explosives, making it the world's first time. The new emulsion explosive tunnel intelligent charging vehicle used in this mixed explosive blasting test was jointly developed by China Communications Second Engineering Bureau, Hunan Jinshi Intelligent Manufacturing, and Gao Zhengmin Explosive Company. "This intelligent loading vehicle has multiple innovations," said Wang Shuai Shuai, the head of the Tunnel and Underground Engineering Innovation Studio of China Communications Second Highway Engineering Bureau. The R&D personnel use servo systems to transport bulk emulsion explosives, thickeners, and lubricants; Propose adjustable ratio of mixed explosives; Using a new thickener to achieve real-time adjustment of charge density, the density can be adjusted between 0.7-1.3 kilograms per liter, and the detonation speed can be adjusted between 3300-4800 meters per second; Low density explosives can be loaded into peripheral holes, auxiliary holes, etc., while high-density explosives can be loaded into slot holes, bottom holes, etc., resulting in good blasting effects. "Compared with traditional manual finished drug roll charging technology, this new emulsion explosive tunnel intelligent charging vehicle can further reduce drilling volume, improve blasting depth efficiency by more than 10%, and reduce the number of on-site workers from 11 to 5, greatly improving the mechanization level of charging operations." Wang Shuai said. Experts say that this emulsion explosive tunnel intelligent charging vehicle fills the gap in the field of intelligent adjustment of charge density for mechanized on-site mixed loading operations in domestic tunnels.

The total length of a plateau railway, which started construction in November 2020, is 1011km. The environment along the line is harsh, and the bridge tunnel ratio is as high as 95.8%. The construction period is as long as 10 years. A certain plateau tunnel has a total length of 42.3km and is designed as a double track separated single track railway tunnel with a maximum burial depth of 1506m. The project has the following characteristics: "One length": This tunnel is the longest tunnel in China's railway; "Two Duo": There are many natural disasters along the line and many unfavorable geological conditions in tunnels; "Four Difficulties": Difficulty in ventilation and dust reduction during long-distance excavation construction, difficulty in accurately predicting and protecting against high ground stress and rock bursts, difficulty in temperature reduction and prevention during long-distance excavation of high ground temperature tunnels, and difficulty in organizing construction with multiple working faces inside the tunnel; "Five Highs": high ground stress, high seismic intensity, high ground temperature, high sea level, and high environmental requirements. The total length of a plateau railway, which started construction in November 2020, is 1011km. The environment along the line is harsh, and the bridge tunnel ratio is as high as 95.8%. The construction period is as long as 10 years. A certain plateau tunnel has a total length of 42.3km and is designed as a double track separated single track railway tunnel with a maximum burial depth of 1506m. The project has the following characteristics: "One length": This tunnel is the longest tunnel in China's railway; "Two Duo": There are many natural disasters along the line and many unfavorable geological conditions in tunnels; "Four Difficulties": Difficulty in ventilation and dust reduction during long-distance excavation construction, difficulty in accurately predicting and protecting against high ground stress and rock bursts, difficulty in temperature reduction and prevention during long-distance excavation of high ground temperature tunnels, and difficulty in organizing construction with multiple working faces inside the tunnel; "Five Highs": high ground stress, high seismic intensity, high ground temperature, high sea level, and high environmental requirements. As a major technology provider, Hunan Jinshi Intelligent Manufacturing Technology Co., Ltd. is a high-tech enterprise specializing in the transfer of emulsion explosive production process technology, research on emulsion explosive fully static production lines, transportation vehicles, charging vehicles, wireless electronic detonators, and blasting technology. It is a holding subsidiary of Jinshi Resources Group, and the intelligent charging vehicle for the tunnel has the following key technologies: (1) Clothing and medication system:High conveying accuracy of each component, and real-time adjustable ratio;（2）Real time adjustment technology for charge density：Low density explosives can be loaded into peripheral holes, auxiliary holes, etc., while high-density explosives can be loaded into slot holes, bottom holes, etc., with a density of 0.7-1.3kg/L and an adjustable detonation speed of 3000-5000m/s;（3）New energy lithium iron phosphate battery electric drive technology:No exhaust emissions during loading, green, environmentally friendly and efficient;（4）Heavy load telescopic arm loading platform technology：The dressing medicine device can be directly placed close to the borehole, and the short distance delivery has low pressure efficiency and high flushing pipeline waste；（5）Explosive technology for bulk emulsion explosives：Coupling charging through slotted holes, reinforced charging at the bottom of other holes+uncoupled charging, low-density charging through peripheral holes, can increase footage, control over excavation and reduce drilling. During the construction process of the plateau tunnel, the tunnel specific emulsion explosives developed by Jinshi Intelligent Manufacturing, which were loaded by the tunnel intelligent charging vehicle, can be reliably detonated, as shown in the following picture. Intelligent Charging Vehicle for BCR-0.5-II Emulsion Explosive Tunnel at the Entrance of a Plateau Tunnel Intelligent Charging Vehicle for BCR-0.5-II Emulsion Explosive Tunnel under Construction The charging efficiency, blasting depth, and smooth blasting effect are all better than those of manual blasting After using the tunnel intelligent charging vehicle, the labor quota was reduced from 12 people to 4 people. The charging efficiency went from waiting on the pier to the entire blasting process, which took about 2 hours. The high-density coupling charging of the cutting hole had a good blasting effect, and the blasting depth of the same depth hole was increased by 15% to 20% compared to manual operation. The low-density charging of the surrounding holes improved the light blasting effect. By optimizing the hole network parameters, the number of holes punched could be reduced by about 15% to 20%. The intelligent loading vehicle for tunnels reduces the labor quota, reduces the labor intensity of workers, improves comprehensive construction efficiency, reduces comprehensive construction costs, and reduces operational safety risks. The successful application of BCR-0.5-II emulsion explosive tunnel intelligent charging vehicle in a certain plateau tunnel marks the realization of mechanized operation in tunnel charging and blasting! This is a major innovation and breakthrough in tunnel drilling and blasting construction technology in China, providing strong technical support for tunnel construction. Combined with the wireless electronic detonator technology currently being developed by Jinshi Intelligent Manufacturing, tunnel charging and blasting will develop towards unmanned and intelligent directions.

On January 11, 2023, the BCHM Field Mixed Emulsion Explosive Truck jointly developed by Hunan Jinshi Intelligent Manufacturing Technology Co., Ltd. and Hunan Yueyang the Nanling Mountain Civil Blasting Service Co., Ltd. passed the scientific and technological achievements appraisal organized by the Hunan Provincial Department of Industry and Information Technology. The experts of the appraisal committee unanimously believe that the technology of the project has reached an international leading level. The BCHM on-site mixed loading emulsion explosive vehicle adopts a servo driven material conveying system to achieve intelligent adjustment of charge density. The density of explosives in peripheral holes, cutting holes, bottom holes, and from the bottom to the hole mouth can be adjusted as needed, greatly reducing the amount of explosives and achieving smooth blasting. The use of a heavy-duty telescopic arm loading platform makes construction more convenient, with a large loading capacity and a wide working range, making loading operations safer and more efficient, suitable for loading construction in mines, tunnels, and tunnels. Especially when using lithium iron phosphate battery electric drive technology, it has no exhaust emissions, low noise, low usage and maintenance costs, is more environmentally friendly and energy-saving. This project has obtained 3 invention patents and multiple utility model patents, and published 1 SCI paper. The meeting was chaired by Wang Xiaobo, Deputy Director of the Civil Explosives Department of the Hunan Provincial Department of Industry and Information Technology. Peng Qiwen, Director of the Civil Explosives Department of the Hunan Provincial Department of Industry and Information Technology, gave an important speech. Professor Deng Anjian, Deputy Secretary of the Party Committee and Chief Engineer of the Nanling Mountain Civil Blasting Equipment Co., Ltd., Wu Lingyi, Chairman of Hunan Jinshi Intelligent Manufacturing Technology Co., Ltd., Tang Xiuyong, General Manager of Hunan Jinshi Intelligent Manufacturing Technology Co., Ltd., and Liao Zhenshu, Executive Deputy General Manager of the Nanling Mountain Civil Blasting Service Co., Ltd. in Yueyang, Hunan attended the appraisal meeting. The appraisal committee is composed of seven national senior experts in civil explosives, including Yang Zuyi, Qiu Chaoyang, Wang Yuesheng, Cao Changcheng, Wang Jianguo, Chao Guangyan, and Liu Yuxing. This project has been highly recognized by the leaders and experts attending the meeting. It is highly recognized for the innovation ability of Hunan Jinshi Intelligent Manufacturing Technology Co., Ltd. and Hunan Yueyang the Nanling Mountain Civil Blasting Service Co., Ltd. It also conforms to the development direction of civil blasting industry policies, and promotes the progress of intelligent mines and unmanned mining technology.