As an important member of China's foundation engineering equipment industry, Dunyu Heavy Industry has always upheld and emphasized the philosophy and requirement of "crafting the Dunyu drilling rig series with craftsmanship for a century of Dunyu." Since its founding, "quality is conscience" has been the code of conduct for every Dunyu employee.

Dunyu Heavy Industry consistently maintains high standards in product technology, craftsmanship, quality, and after-sales service. It continuously pursues technological innovation and optimization, improves equipment testing and inspection methods, and strengthens pre-sales, in-sales, and after-sales service capabilities to ensure it meets customers' needs in terms of quality and performance.

Over the years, Dunyu Heavy Industry has won the favor and praise of numerous new and existing customers through its outstanding quality and reputation, and has also gained a certain degree of brand recognition in the foundation engineering industry. In recent years, with the expansion of the foundation engineering industry, the market share of Dunyu Heavy Industry drilling rigs has continued to rise, with performance climbing year after year. Dunyu Heavy Industry drilling rigs have also continued to innovate in product models and series, launching new products one after another to expand and enhance Dunyu Heavy Industry's leading position in the foundation engineering industry.

Among them, the DY-220D crawler-type engineering drilling rig has become a best-selling product in Dunyu Heavy Industry's drilling rig sales due to its extremely high cost-effectiveness. With a crawler chassis, full hydraulic drive, and impact power head, it is a drilling device suitable for drilling at multiple angles and in multiple directions, and has won widespread praise from a large number of customers.

The DY-220D crawler-type engineering drilling rig is mainly suitable for the construction of tunnel pipe-roof support holes, grouting reinforcement holes, large-tonnage prestressed anchor holes or drainage holes in geotechnical engineering such as hydropower station projects, railways, and highway slopes, the construction of holes for urban deep foundation pit support and ground reinforcement projects, as well as ground-source heat pump hole construction; it is also suitable for landslide prevention and rock collapse disaster treatment projects; and it also accommodates the survey and construction of small foundation pile holes and hydrological water wells. It has strong adaptability to various strata and complex working conditions, and can effectively solve the problem of difficult hole formation when drilling in loose overburden strata, gravel layers, and fractured bedrock strata, giving it a very wide range of applications.

In recent years, with the overall progress of China's manufacturing industry, it has become increasingly common for domestic independent brands to compete and rival internationally renowned brands on the same stage. Dunyu Heavy Industry is one of them. In recent years, Dunyu Heavy Industry drilling rigs have not only met the growing demand of the domestic market but also actively researched new processes and construction methods. With the rapid development of engineering construction in recent decades, the utilization rate of underground green space has become higher and higher, construction difficulty has increased, and requirements have become more demanding. Traditional construction methods can no longer meet construction needs, so Dunyu Heavy Industry has introduced the MJS method, a micro-disturbance construction method suitable for diaphragm wall joint construction in ultra-deep foundation pits, construction near operating subways, subway interchange station construction, construction near high-rise buildings, and construction of underground pipeline networks that cannot be relocated.

General Secretary Xi has also repeatedly proposed building high-quality manufacturing, which serves as a higher goal and requirement for China's independent brand manufacturing enterprises. The gradual replacement of imported brands by domestic brands is an inevitable trend, a mission of China's manufacturing industry, and also the mission of Dunyu Heavy Industry. Especially under the rare opportunity of the domestic and international economic dual circulation, Dunyu Heavy Industry will firmly seize the historical opportunity, take the "building high-quality manufacturing" proposed by the General Secretary as its new mission and goal, and build a technology-oriented and innovation-driven Dunyu Heavy Industry that comprehensively moves toward the future in the new era.

Dunyu Heavy Industry not only continues to achieve breakthroughs in the market but will also continue to update and iterate in product innovation, making the comprehensive building of a high-quality manufacturing enterprise and a national brand the lifelong pursuit of every Dunyu employee.