中石化华东石油工程有限公司，成立于2012年，位于南京市，是一家以从事土木工程建筑业为主的企 业。企业注册资本86429.68万人民币。通过天眼查大数据分析，中石化华东石油工程有限公司共对外投 资了3家企业，参与招投标项目2218次，财产线索方面有商标信息1条，专利信息254条，此外企业还拥 有行政许可53个。 来源：金融界 天眼查资料显示，中石化石油工程技术服务股份有限公司，成立于1994年，位于北京市，是一家以从事 土木工程建筑业为主的企业。企业注册资本1898434.0033万人民币。通过天眼查大数据分析，中石化石 油工程技术服务股份有限公司共对外投资了14家企业，参与招投标项目126次，财产线索方面有商标信 息1条，专利信息2001条，此外企业还拥有行政许可2个。 金融界2025年8月5日消息，国家知识产权局信息显示，中石化石油工程技术服务股份有限公司;中石化 华东石油工程有限公司取得一项名为"泥页岩超深井用抗高温抗钙水基钻井液及其制备方法"的专利，授 权公告号CN117757446B，申请日期为2023年11月。 ...

天眼查商业履历信息显示，龙建路桥股份有限公司，成立于1993年，位于哈尔滨市，是一家以从事土木 工程建筑业为主的企业。企业注册资本101403.1746万人民币，实缴资本44669.003万人民币。公司法定 代表人为宁长远。 通过天眼查大数据分析，龙建路桥股份有限公司共对外投资了88家企业，参与招投标项目5000次，知识 产权方面有商标信息4条，专利信息448条，此外企业还拥有行政许可231个。 来源：金融界 金融界消息 截至2025年7月29日收盘，龙建股份（600853）报收于3.79元，下跌0.52%，换手率2.9%， 成交量29.37万手，成交金额1.11亿元。 资金流向方面，今日主力资金净流出1240.41万元，占比成交额11.21%。其中，超大单净流出783.21万 元、占成交额7.08%，大单净流出457.20万元、占成交额4.13%，中单净流出流出72.45万元、占成交额 0.65%，小单净流入1312.85万元、占成交额11.87%。 龙建股份最新一期业绩显示，截至2025一季报，公司营业总收入18.00亿元、同比减少5.06%，归属净利 润821.70万元，同比增长25.71%，扣非净利润 ...

专利摘要显示，本发明提供了一种离子液体及含有其的复配吸收剂。所述离子液体为四乙基氢氧化铵氨 基酸盐；所述复配吸收剂包括所述的离子液体和咪唑。 金融界2025年7月29日消息，国家知识产权局信息显示，中国石油化工集团有限公司、中石化石油工程 技术服务股份有限公司、中石化石油工程设计有限公司申请一项名为"一种离子液体及含有其的复配吸 收剂"的专利，公开号CN120383534A，申请日期为2024年01月。 中石化石油工程技术服务股份有限公司，成立于1994年，位于北京市，是一家以从事土木工程建筑业为 主的企业。企业注册资本1898434.0033万人民币。通过天眼查大数据分析，中石化石油工程技术服务股 份有限公司共对外投资了14家企业，参与招投标项目126次，财产线索方面有商标信息1条，专利信息 1904条，此外企业还拥有行政许可2个。 中石化石油工程设计有限公司，成立于2003年，位于东营市，是一家以从事专业技术服务业为主的企 业。企业注册资本31800万人民币。通过天眼查大数据分析，中石化石油工程设计有限公司共对外投资 了3家企业，参与招投标项目4450次，财产线索方面有商标信息1条，专利信息488条，此外 ...

Group 1 - The State Intellectual Property Office of China granted a patent to Sinopec Petroleum Engineering Technology Service Co., Ltd. for a noise suppression method, system, storage medium, and electronic device, with the authorization announcement number CN115016004B and application date of June 2022 [1] - Sinopec Petroleum Engineering Technology Service Co., Ltd. was established in 1994, located in Beijing, primarily engaged in civil engineering construction, with a registered capital of 1,898,434,003.33 RMB [1] - The company has made investments in 14 enterprises, participated in 126 bidding projects, holds 1 trademark, and has 1,904 patent records, along with 2 administrative licenses [1] Group 2 - Sinopec Petroleum Engineering Geophysical Co., Ltd. was established in 2012, also located in Beijing, primarily engaged in professional technical services, with a registered capital of 30,000,000 RMB [1] - This company has invested in 1 enterprise, participated in 1,930 bidding projects, holds 343 patent records, and possesses 515 administrative licenses [1]

Group 1 - The State Intellectual Property Office of China has published a patent application by Sinopec Petroleum Engineering Technology Service Co., Ltd. for a "downhole sand cleaning system under fluctuating pressure," with publication number CN120384709A and application date of June 2025 [1] - The patent describes a downhole sand cleaning system that includes a sand cleaning operation system and a drilling fluid circulation system, featuring multiple second casing pipes and sand collection equipment [1] - The proposed system utilizes a flow regulation device and a boosting device to create high-frequency fluctuating pressure, allowing for effective lifting of sand-containing fluid through a jet device [1] Group 2 - Sinopec Petroleum Engineering Technology Service Co., Ltd. was established in 1994, located in Beijing, with a registered capital of approximately 1.898 billion RMB [2] - The company has made investments in 14 enterprises and participated in 126 bidding projects, holding 1 trademark and 1,904 patent records [2] - Sinopec Zhongyuan Petroleum Engineering Design Co., Ltd. was founded in 1993 in Zhengzhou, with a registered capital of 100 million RMB, having invested in 2 enterprises and participated in 2,771 bidding projects, holding 243 patent records [2]

Group 1 - The State Intellectual Property Office of China has granted a patent for a "semi-circular plate cutting device" to Sinopec Petroleum Engineering Technology Service Co., Ltd. and Sinopec Shengli Oilfield Engineering Co., Ltd. The patent number is CN223160502U, with an application date of August 2024 [1] - The patent describes a semi-circular plate cutting device that includes a cylinder, supporting mechanism, and cutter. The supporting mechanism consists of a vertical support plate and at least two horizontal supporting beams that stabilize the semi-circular plate during cutting [1] - The design allows the cutter to slide along the surface of the cylinder, ensuring stable movement and efficient cutting of the semi-circular plate, highlighting the device's simple structure and ease of use [1] Group 2 - Sinopec Petroleum Engineering Technology Service Co., Ltd. was established in 1994 and is based in Beijing, primarily engaged in civil engineering construction. The registered capital is approximately 1.898 billion RMB [2] - The company has made investments in 14 enterprises and participated in 126 bidding projects, holding 1 trademark and 1,904 patents, along with 2 administrative licenses [2] - Sinopec Shengli Oilfield Engineering Co., Ltd. was founded in 2001 and is located in Dongying City, focusing on building decoration and other construction activities. The registered capital is approximately 20.471 million RMB [2] - This company has invested in 9 enterprises, participated in 5,000 bidding projects, holds 6 trademarks, 250 patents, and possesses 162 administrative licenses [2]

1. Report Industry Investment Rating No relevant content provided. 2. Core Viewpoints of the Report - North - Exchange convertible bonds have certain special features in terms of clause settings and transfer transactions, with relatively low overall issuance scale. In the current policy environment encouraging mergers and acquisitions, private placement convertible bonds may become an important tool for North - Exchange listed companies to introduce strategic investors and be widely used as a payment instrument for M&A. With the slowdown of new supply of public convertible bonds in the Shanghai and Shenzhen Stock Exchanges, continuous attention to North - Exchange related investment opportunities is recommended [2][13]. - Considering the impact of refinancing policies, the subsequent issuance pressure of convertible bonds is expected to be low. As the stock market recovers, the return of incremental funds in convertible bonds drives the valuation to a relatively high historical level, and attention should be paid to the risk of valuation correction. In terms of clauses, continue to focus on the space for lower - revision games, be vigilant against call risks, and appropriately focus on short - term game opportunities of near - maturity convertible bonds. Industries to focus on include popular themes, domestic demand - oriented sectors, central state - owned enterprises under the Chinese characteristic valuation system, and the military industry [16]. 3. Summary According to the Directory 3.1.转债周度专题与展望 3.1.1. 北交所转债怎么看？ - As of July 25, there were 5 convertible bond proposals on the North - Exchange. The current proposals are all private placement convertible bonds with an issuance scale within 150 million yuan. North - Exchange private placement convertible bonds usually do not have a "downward revision clause", suspend transfer 10 trading days before the end of the conversion period, have a clear 18 - month conversion restriction requirement, and a non - call period of at least 6 months [1][10]. - Taking the private placement convertible bonds of Youji Co., Ltd. as an example, it has obvious features in the initial conversion price, conditional call clause, non - downward revision clause, and put period. Other clauses are relatively conventional, with an issuance term of 6 years and a put trigger threshold of 70% [11][13]. 3.1.2. 周度回顾与市场展望 - This week, the three major stock indices fluctuated upward, with active trading and obvious rotation of hot sectors. The A - share market valuation is recovering. Measures such as large - scale equipment renewal and consumer goods replacement are expected to boost domestic demand, while export growth may decline. A weak resonance between the domestic economic fundamentals and the capital market is expected to gradually start [14][15]. - In terms of convertible bonds, considering the impact of refinancing policies, the subsequent issuance pressure is expected to be low. As the stock market recovers, the return of incremental funds drives the valuation to a relatively high historical level, and attention should be paid to the risk of valuation correction. Industries to focus on include popular themes, domestic demand - oriented sectors, central state - owned enterprises under the Chinese characteristic valuation system, and the military industry [16]. 3.2. 转债市场周度跟踪 3.2.1. 权益市场收涨，建材煤炭钢铁领涨 - This week, the major equity market indices rose. The market style was more inclined to small - cap value stocks. Among the 27 Shenwan industry indices, 27 rose and 4 fell. Building materials, coal, and steel industries led the market [19][22]. 3.2.2. 转债市场大涨，百元溢价率中位数抬升 - This week, the convertible bond market rose. The average daily trading volume increased. Most industries in the convertible bond market rose, with coal, building materials, and petroleum and petrochemical industries leading the gains. Only bank convertible bonds fell. Most individual bonds rose. In terms of price, the number of absolute low - price convertible bonds decreased, and the median price increased significantly. The weighted conversion value of the whole market increased, and the premium rate decreased [24][31][36]. 3.2.3. 不同类型转债高频跟踪 3.2.3.1. 分类估值变化 - This week, the valuations of equity - biased and balanced convertible bonds increased significantly, with a higher increase in balanced convertible bonds. The valuations of convertible bonds with a parity of 0 - 80 yuan and above 130 yuan decreased, while those of other parity convertible bonds increased. The valuations of most convertible bonds of each rating decreased, and the valuations of convertible bonds in each scale category decreased [51]. 3.2.3.2. 市场指数表现 - This week, convertible bonds of all ratings rose. Since 2023, high - rating AAA convertible bonds have shown stable performance, while low - rating convertible bonds have shown weaker anti - decline attributes and greater rebound strength. Convertible bonds of all scales rose this week [62][64]. 3.3. 转债供给与条款跟踪 3.3.1. 本周一级预案发行 - Two new convertible bonds were listed this week, and one was issued but not yet listed. The first - day closing prices of Libo Convertible Bonds and Guanghe Convertible Bonds were 129.46 yuan and 129.80 yuan respectively, with reasonable pricing. The scale of the to - be - listed Bo 25 Convertible Bonds is 2.802 billion yuan. There were 9 first - level approvals this week [69]. 3.3.2. 下修&赎回条款 - This week, 9 convertible bonds were expected to trigger downward revision, 9 announced no downward revision, 2 proposed downward revision, and 1 announced the downward - revision result. Thirteen convertible bonds were expected to trigger call, 4 announced no call, and 4 announced early call. As of the end of this week, 3 convertible bonds were still in the put declaration period, and 19 were in the company's capital reduction and settlement declaration period [73][77][79].

Group 1 - The State Intellectual Property Office of China has granted a patent for a "sand throwing device" to Sinopec Petroleum Engineering Technology Service Co., Ltd. and Sinopec Shengli Oilfield Engineering Co., Ltd. The patent was authorized under announcement number CN223151190U, with an application date of August 2024 [1] - The sand throwing device is designed for offshore construction technology and includes a frame, a hopper, and a discharge door assembly. The device allows for precise sand throwing to meet seabed leveling requirements after pile driving operations [1] - The device features a simple structure and ease of use, with components such as a lifting ear on the frame, a hopper inside the frame, and a discharge door assembly at the bottom of the hopper [1] Group 2 - Sinopec Petroleum Engineering Technology Service Co., Ltd. was established in 1994 and is based in Beijing, primarily engaged in civil engineering and construction. The company has a registered capital of approximately 1.898 billion RMB and has invested in 14 enterprises, participated in 131 bidding projects, and holds 1 trademark and 1,904 patents [2] - Sinopec Shengli Oilfield Engineering Co., Ltd. was founded in 2001 and is located in Dongying City, focusing on building decoration and other construction activities. The company has a registered capital of approximately 20.471 million RMB, has invested in 9 enterprises, participated in 5,000 bidding projects, and holds 6 trademarks and 250 patents [2]

龙建路桥股份有限公司 关于公司为子公司提供担保进展的公告 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈述或者重大 遗漏，并对其内容的真实性、准确性和完整性承担法律责任。 重要内容提示： 一、担保情况概述 公司于 2025 年 4 月 30 日召开的第十届董事会第十九次会议、2025 年5 月21 日召开的2024 年年度股东大会审议通过了《关于公司2025 年 度对外担保预计额度的议案》，公司 2025 年度对外担保预计额度为 743,682.49 万元（其中融资授信 738,558.49 万元）。其中，公司对资 产负债率 70%以上子公司担保预计额度为 462,954.00 万元（其中融资授 信 457,830.00 万元），对资产负债率低于 70%子公司担保预计额度为 280,728.49 万元（其中融资授信 280,728.49 万元），担保额度和授权 被担保人名称：黑龙江省龙建路桥第二工程有限公司、黑龙江省龙建路 桥第四工程有限公司、黑龙江省龙建路桥第五工程有限公司、龙建科工 （黑龙江）有限公司、黑龙江浩扬沥青有限公司为公司全资子公司，不 属于关联担保。 本次担保金额及已实际为其提 ...

证券代码：600853 证券简称：龙建股份 编号：2025-056 龙建路桥股份有限公司 关于向不特定对象发行可转换公司债券 获得中国证券监督管理委员会同意注册批复的公告 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈述或者重大 遗漏，并对其内容的真实性、准确性和完整性承担法律责任。 龙建路桥股份有限公司（以下简称公司）于近日收到中国证券监督 管理委员会出具的《关于同意龙建路桥股份有限公司向不特定对象发行 可转换公司债券注册的批复》（证监许可〔2025〕1496 号），现将批复文 件主要内容公告如下： 一、同意你公司向不特定对象发行可转换公司债券的注册申请。 二、你公司本次发行应严格按照报送上海证券交易所的申报文件和 发行方案实施。 三、本批复自同意注册之日起 12 个月内有效。 四、自同意注册之日起至本次发行结束前，你公司如发生重大事项， 应及时报告上海证券交易所并按有关规定处理。 公司董事会将按照上述批复文件和相关法律法规的要求以及公司 股东大会的授权，在规定期限内办理本次向不特定对象发行可转换公司 债券的相关事项，并及时履行信息披露义务，敬请广大投资者注意投资 风险。 特此公告。 龙建 ...