Poly Changda Engineering Co., Ltd. (referred to as “Poly Changda”) holds a top-grade qualification for general contracting in highway engineering and multiple class-A qualifications. It maintains a leading position domestically in road, bridge, and tunnel construction and has participated in world-class projects such as the Hong Kong-Zhuhai-Macau Bridge and the Shenzhen-Zhongshan Bridge. The company operates in 20 provinces and municipalities in China and 15 countries, with an annual output value exceeding 20 billion yuan. It pioneered the use of GMA pouring asphalt concrete technology internationally and has received six State Scientific and Technological Progress Awards, along with various honors, including being named one of the “Top Ten Bridge Heroes Teams in China’s Transportation Construction.”

China Haisum Engineering Co., Ltd. (Haisum) was publicly listed on Shenzhen Stock Exchange in February 2007 (stock code: SZ 002116). Haisum is the largest comprehensive engineering services provider in the light industry, undertaking a wide range of projects with all the qualifications and expertise required to ensure success. As a member of the “national team” for engineering services in the light industry, Haisum provides one-stop intelligent engineering services to over 60 countries and regions worldwide. These services include consulting and design, procurement and R&D, construction and installation, driving training, digital delivery, smart operation and maintenance, and intelligent manufacturing.

Haisum boasts over 100 national design masters, industry design masters, and experts who receive government allowances from the State Council. The company has also contributed to the development of more than 100 national and industry standards and regulations. Over the past 70 years, Haisum has delivered numerous landmark projects with a focus on excellence, leaving a lasting impact across eras. Notable projects include the Shanghai Disneyland Resort, the Universal Studios Beijing, various projects of Nongfu Spring, Coca Cola-Bright Food, and Oji Paper, all of which have earned widespread recognition both domestically and internationally.

In addition, Haisum has actively responded to the Belt and Road Initiative, helping Chinese manufacturing, standards, technology, and engineering go global. The company has played a vital role in advancing new productive forces, promoting economic transformation and upgrading, and contributing to sustainable development.

Poly Xinlian Explosive Engineering Group Co., Ltd. (referred to as “Poly Xinlian”) is a large comprehensive engineering enterprise under Poly Union Group Co., Ltd. It integrates explosive engineering, mining engineering, municipal engineering, building construction, highway engineering, water conservancy and hydropower engineering, steel structure construction, as well as investment and financing for construction projects. Poly Xinlian is one of the few domestic enterprises that holds multiple top-tier qualifications, including Grade 1 General Contracting for Mining Engineering, Municipal Public Engineering, and Building Construction, as well as Grade 1 certification for Commercial Explosive Operations. It also possesses an annual production capacity license for 10,000 tons of on-site mixed explosives and has a license for transporting hazardous materials. Poly Xinlian is the first explosive engineering company recognized as a “National Enterprise Technology Center.” It is a leading company in explosive engineering, integrated mining operations, and ecological restoration in China, with extensive experience and a strong reputation in open-pit mining and ecological rehabilitation projects.

Poly Xinlian, leveraging its integration of production, education, and research, has positioned itself in the “first tier” of the national explosive industry. Its explosive technology is at the forefront in China. The company is recognized as a national high-tech enterprise, a provincial-level technology innovation demonstration enterprise, and one of Guizhou’s first innovation-driven leading companies. It operates 3 national-level platforms and 5 provincial-level platforms.

Since its establishment in 1993, Poly Xinlian has successfully carried out over 500 engineering projects, including more than 100 key projects. These efforts have significantly supported infrastructure, transportation, and energy construction across various regions. Its business spans across multiple provinces and regions in China, including Guizhou, Guangdong, Sichuan, Hebei, Shanxi, Jiangxi, Inner Mongolia, Xinjiang, Tibet, Heilongjiang, and Shandong. Poly Xinlian has actively contributed to urbanization and social and economic development.