Changzhou Dadi Surveying Science & Technology Co., Ltd. is a provincial-level high-tech enterprise based in the Changzhou Development Zone, Jiangsu Province. The company specializes in cutting-edge surveying, industrial support, and construction equipment, with a primary focus on the design and production of high-precision infrared laser sensors (with an accuracy of 0.1mm), as well as the development and manufacturing of surveying, industrial, construction, and safety monitoring software and supporting devices. The company’s main products include:

DM Series: High-precision infrared laser sensors (200m indoor/outdoor, 0.1mm accuracy)

DE Series: Electronic Theodolites

DTM Series: Total Stations

DSD Series: Laser Guided Photography System

Surveying tools and accessories

These products cover high-end surveying instruments, industrial equipment, and construction tools.

After a successful restructuring in 2006, the company has experienced rapid growth, with annual output value increasing by more than 50%. Its products are sold across all 32 provinces, municipalities, and autonomous regions of China and exported globally.

The company is committed to becoming one of the most respected and well-known developers and manufacturers of surveying science and technology instruments both domestically and internationally. In 2011, it was named a "Jiangsu Province High-tech Enterprise," and in 2013, it was recognized as a "Jiangsu Province Science and Technology Small and Medium-sized Enterprise."

Equipment production

Equipment inspection

Equipment testing

Leveraging 20 years of experience in distance measurement, the company has expanded its expertise beyond surveying into other fields. In recent years, it has actively conducted research in areas such as image recognition, photogrammetry, industrial measurement, and high-precision laser sensor technologies, while working to explore new applications for its advanced surveying technologies.

The company adheres to the spirit of “integrity, unity, hard work, and innovation,” continually striving to provide advanced technology, high-quality products, and professional technical services to meet the evolving needs of customers.

Changzhou Dadi places a strong emphasis on the development and training of its R&D team, having established a comprehensive R&D organization and management system. The company has been included in the Changzhou Science and Technology Plan Project.

To date, the company has successfully developed a series of precision measurement systems with independent intellectual property rights in fields such as electric power, road transportation, and industrial manufacturing, along with industry-specific system solutions. The company holds 2 high-tech product certifications, 25 software copyrights, 7 utility model patents, 5 invention patents, and 4 accepted invention patent applications.

Equipment production

Equipment inspection

Equipment testing