Company Overview - Chongqing Qice Construction Engineering Co., Ltd. has been established with a registered capital of 40 million RMB [1] - The legal representative of the company is Zhang Difen, and it is wholly owned by Chongqing Xuandi Construction Development Co., Ltd. [1] Business Scope - The company’s business scope includes construction engineering contracting, construction labor subcontracting, landscaping engineering contracting, municipal facilities management, metal door and window engineering contracting, and earthwork engineering contracting [1] - The company is required to obtain relevant approvals for certain projects before commencing operations [1] Corporate Structure - Chongqing Qice Construction Engineering Co., Ltd. is classified as a limited liability company with natural person investment or control [1] - The company is registered in the construction industry, specifically under civil engineering and other civil engineering categories [1] Registration Details - The company is registered at the address: 485 Xinhua Avenue West, 2nd Floor, Room 153, Qianjiang District, Chongqing [1] - The business registration is valid until February 10, 2026, with no fixed term thereafter [1] - The registration authority is the Market Supervision Administration of Qianjiang District, Chongqing [1]

Group 1 - The core viewpoint is that China Railway is a large enterprise group that integrates design consulting, engineering construction, equipment manufacturing, specialty real estate, asset management, resource utilization, financial trade, and emerging businesses [1] - China Railway has been ranked among the world's top 500 companies for 20 consecutive years, currently holding the 43rd position in the Fortune Global 500 for 2025 and the 9th position in the China Top 500 Enterprises [1]

Group 1 - Shenzhen San Sheng Intelligent Manufacturing Equipment Co., Ltd. has obtained a patent for an automatic assembly and welding method for rebar mesh, with the authorization announcement number CN117245038B, applied on September 2023 [1] - Shenzhen San Sheng Intelligent Manufacturing Equipment Co., Ltd. was established in 2020, located in Shenzhen, with a registered capital of 10 million RMB, and has 12 patents and 7 trademarks [1] - China Railway 17th Bureau Group Urban Construction Co., Ltd. was established in 2015, located in Guiyang, with a registered capital of 1 billion RMB, and has 171 patents and participated in 3,619 bidding projects [1] Group 2 - China Railway Kunlun Investment Group Co., Ltd. was established in 2016, located in Chengdu, with a registered capital of approximately 508.72 million RMB, and has 217 patents and invested in 80 companies [2] - The company has participated in 1,765 bidding projects and holds 12 administrative licenses [2]

Group 1 - The State Intellectual Property Office of China has granted a patent for a construction process involving embedded grouting pipes to China Railway 11th Bureau Group Co., Ltd., China Railway 11th Bureau Group Urban Rail Engineering Co., Ltd., and China Railway 11th Bureau Wuhan Heavy Equipment Co., Ltd. The patent authorization announcement number is CN118979649B, with an application date of August 2024 [1] - China Railway 11th Bureau Group Co., Ltd. was established in 2001 and is based in Wuhan. It primarily engages in civil engineering construction, with a registered capital of 6162.382 million RMB. The company has invested in 166 enterprises and participated in 5000 bidding projects, holding 5 trademark records and 4198 patent records, along with 2645 administrative licenses [1] - China Railway 11th Bureau Group Urban Rail Engineering Co., Ltd. was founded in 2007 and is also located in Wuhan, focusing on civil engineering construction. It has a registered capital of 1010 million RMB, invested in 3 enterprises, participated in 5000 bidding projects, holds 649 patent records, and has 95 administrative licenses [1] Group 2 - China Railway 11th Bureau Wuhan Heavy Equipment Co., Ltd. was established in 2019, located in Wuhan, and specializes in manufacturing railway, shipbuilding, aerospace, and other transportation equipment. The company has a registered capital of 200 million RMB, participated in 94 bidding projects, holds 2 trademark records, 231 patent records, and has 17 administrative licenses [2]

Core Viewpoint - Hubei Shigong Construction Engineering Co., Ltd. has been established with a registered capital of 4 million RMB, fully owned by Hubei Yanqin Jiayou Enterprise Management Co., Ltd. [1] Company Information - The legal representative of Hubei Shigong Construction Engineering Co., Ltd. is Tan Yudi [1] - The company is registered with a capital of 4 million RMB [1] - The business address is located at 3rd Floor, No. 38 Jixianli, Qiaokou District, Wuhan, Hubei Province [1] - The company is classified as a limited liability company with natural person investment or control [1] - The business operation period is from February 2, 2026, to an indefinite term [1] Business Scope - The company’s business scope includes construction engineering contracting, construction labor subcontracting, and construction engineering design [1] - Other general projects include foreign contracting, sports venue facilities construction, landscaping engineering, and installation services for general machinery [1] - The company is also involved in the sale of construction materials, hardware products, and various technical services [1]

Core Viewpoint - Shandong Xiangkai Construction Engineering Co., Ltd. has been established with a registered capital of 100 million RMB, indicating a new player in the construction industry [1] Company Summary - The legal representative of Shandong Xiangkai Construction Engineering Co., Ltd. is Wang Jibing [1] - The company is primarily owned by Sichuan Zhongtai Ding New Energy Technology Co., Ltd. (99% stake) and Qingdao Junhui Sheng Enterprise Management Co., Ltd. (1% stake) [1] - The company is registered in Qingdao, Shandong Province, with its business address at Nanjing Road, Shinan District [1] Business Scope - The business scope includes construction engineering contracting, design, supervision, residential interior decoration, specialized construction operations, and labor subcontracting [1] - It also covers the installation, maintenance, and testing of power facilities, as well as landscaping engineering and urban greening management [1] - The company is classified under the construction industry, specifically in civil engineering and other civil engineering sectors [1]

Group 1 - The core point of the article is that China Tower Corporation has applied for a patent related to a charging control method and device that utilizes both AC and DC inputs, which aims to enhance charging efficiency and reduce hardware costs [1]. Group 2 - The patent application, titled "A Charging Control Method and Device with Mixed AC and DC Input," was published under CN121440836A and was filed on October 2025 [1]. - The charging control method involves selecting control strategies based on external voltage signals and charging load information, optimizing the charging process for both AC and DC sources [1]. - The proposed solution allows the charging station to connect directly to both AC and DC energy storage without needing a PCS inverter, significantly reducing switching losses and hardware costs [1]. Group 3 - China Tower Corporation, established in 2014 and located in Beijing, primarily engages in civil engineering and construction [2]. - The company has a registered capital of approximately 1.76 billion RMB and has made investments in four enterprises, participated in 5,000 bidding projects, and holds 1,087 patents [2].

Group 1 - The State Intellectual Property Office of China has granted a patent for a "end plate nut disassembly mechanism and end plate disassembly machine" to China Communications Construction Company Third Harbor Engineering Bureau Co., Ltd. and China Communications Construction Company Third Harbor Bureau Zhoushan Marine Engineering Co., Ltd. The patent authorization announcement number is CN120772797B, with an application date of August 2025 [1] - China Communications Construction Company Third Harbor Engineering Bureau Co., Ltd. was established in 1984 and is located in Shanghai. It primarily engages in civil engineering and construction, with a registered capital of 602,095,098.7 RMB. The company has invested in 124 enterprises and participated in 5,000 bidding projects, holding 5 trademark records and 3,020 patent records, along with 728 administrative licenses [1] - China Communications Construction Company Third Harbor Bureau Zhoushan Marine Engineering Co., Ltd. was established in 2012 and is located in Zhoushan. It primarily operates in other manufacturing sectors, with a registered capital of 85 million RMB. The company has participated in 80 bidding projects, holds 16 patent records, and has 31 administrative licenses [1]

Group 1 - Sichuan Bowei Hong Construction Engineering Co., Ltd. has been established with a registered capital of 40 million RMB [1] - The company is wholly owned by Sichuan Yuxing Enterprise Management Co., Ltd. [1] - The legal representative of the company is Li Lu [1] Group 2 - The business scope includes construction engineering, design, specialized construction operations, and various environmental services [1] - The company is classified under the construction industry, specifically civil engineering [1] - The registered address is located in Wuhou District, Chengdu, Sichuan Province [1]

证券代码：002542 证券简称：中化岩土 公告编号：2026-002 三、特别提示 | 一、合同订单情况 | | --- | | | 新签订单 | | 截至报告期末 | | 已中标尚未签约订单 | | | --- | --- | --- | --- | --- | --- | --- | | 项目类型 | | | 累计已签约未完工订单 | | | | | | 数量（个） | 金额（万 | 数量（个） | 金额（万元） | 数量（个） | 金额（万 | | | | 元） | | | | 元） | | 工程服务 | 22 | 5,889.04 | 199 | 69,355.71 | 3 | 829.83 | 二、重大项目情况 2025 年第四季度公司无重大项目中标。 已签订合同的重大项目履行情况如下： | 项目名称 | 合同金额 | 业务模式 | | 工期 | | 履行情况 | | --- | --- | --- | --- | --- | --- | --- | | | | | | | | 该项目已于 2021 年 10 月开工。截至 | | | | | | | | 年 月末，项目累计确认收入 2025 12 ...