Headquartered in Chongqing, the company maintains its production and manufacturing base in Liaocheng,Shandong. The company is dedicated to the R&D and production of consumables for tunnel excavation and construction. Its corebusiness encompasses the manufacturing and sales of tools and accessories for shield  machines, TBMs, pipe jacking systems, roadheaders (cutting picks), raise boring machines (disc cutters),and other related consumables.

The company's main products are widely utilized across various fields, including coal mining, non-coal mining, urban rail transit,water conservancy, and integrated urban utility tunnels.Currently, the company employs over 180 staff members and occupies a site spanning more than 20,000 square meters. Its facilities include dedicated workshops for forging, machining, heat treatment, and welding, as well as a physical and chemical testing laboratory. Equipped with over 100 sets of machining equipment and morethan 10 sets of heat treatment equipment, the company is fully capable of meeting customer demands regarding both production capacity and product quality. Furthermore, the company maintains a professional and comprehensive after-sales service team, capable of responding promptly and efficiently to various post-purchase

issues, thereby ensuring the smooth and uninterrupted operation of its clients' projects.

Factory

Processing Equipment

Staff

Our eternal promise is simple: to provide you with high-quality, durable cutting tools and responsive, professional services that keep your projects running smoothly, every time.

People & Technology First: We invest in our team’s expertise and advanced manufacturing technologies to push the limits of tunneling and mining cutting tool performance.

Integrity & Pragmatism: We build trust through transparent communication, reliable delivery, and solutions tailored to your toughest construction challenges.

Long-Term Partnership: We balance quality, innovation, and mutual value to deliver tools that stand the test of time—because your success is our success.

At Chongqing Dunrui Technology Co., Ltd., we uphold the core tenet of "Full staff participation, strict process control; precision manufacturing, and continuous technological innovation" across every stage of production.

Guided by our business philosophy of "People-oriented, technology-driven, honest and pragmatic, and value-balanced", we center our operations on three key commitments

Our Chongqing Headquarters serves as the company’s operational and global marketing center.

It oversees business strategy, international sales, customer service, and cross-departmental coordination.

Backed by the Shandong production base, the headquarters ensures seamless support for global clients and project needs.

Our Shandong Production Base is equipped with complete workshops, advanced processing & heat treatment equipment, and a professional testing laboratory.

It undertakes R&D and mass production of tunneling and mining cutting tools under strict quality control standards.

The base delivers stable-performance products with reliable supply and fast delivery to serve clients worldwide.

Partner with us to build the future of infrastructure projects