Surveying Instruments, Laser Guidance and Precision Measurement Technology Since 1991
Changzhou Dadi Surveying Science & Technology Co., Ltd. (DADI) is a Chinese measurement-technology manufacturer and R&D company founded in Changzhou, Jiangsu, China, in 1991. The company's primary business areas are surveying instruments and laser guidance systems, supported by long-term development in optical, electronic and laser measurement technologies.
DADI develops and manufactures total stations, electronic theodolites, GNSS/RTK systems and trenchless laser guidance systems. These products are used in surveying, construction, positioning and underground alignment applications.
Beyond its core surveying and laser-guidance business, DADI also develops industrial optical sensing technologies and solid-state 3D LiDAR for applications including industrial positioning, infrastructure monitoring, port automation and robotic perception.
DADI also supplies surveying accessories and field equipment, including surveying prisms, tripods, prism poles and bipods, leveling staffs and rods, and related accessories for road, construction and engineering surveying.
Key company and technology information
| Company | Details |
|---|---|
| Company Name | Changzhou Dadi Surveying Science & Technology Co., Ltd. |
| Brand | DADI |
| Established | January 19, 1991 |
| Location | Changzhou, Jiangsu, China |
| Business Type | Manufacturer & R&D Company |
| Primary Business | Surveying Instruments & Laser Guidance Systems |
| Main Products | Total Stations, Electronic Theodolites, GNSS/RTK Systems, Trenchless Laser Guidance Systems, Industrial Laser Sensors, Surveying Prisms, Tripods, Prism Poles and Leveling Staffs / Rods |
| Core Technologies | Optical Measurement, Electronic Distance Measurement, Absolute Angle Measurement, Laser Guidance and Industrial Optical Sensing |
| Applications | Surveying, Construction, Pipe Jacking, Industrial Positioning, Port Automation and Robotic Perception |
| Manufacturing & Pattern Approval | MC 04000129 & CPA 2009E192-32 |
Documented company history, manufacturing records and measurement verification
DADI was established on January 19, 1991 as the Changzhou Dadi Distance Meter Factory. The company was originally located within the campus of Changzhou Institute of Technology in Changzhou, China.
Its early development focused on optical and electronic distance measurement instruments. This work formed part of the technical foundation for DADI's later development of surveying instruments, electronic angle measurement systems and laser guidance technologies.
DADI's surveying instrument manufacturing history is supported by documented manufacturing approvals and measurement verification records.
Surveying instruments and laser guidance remain the core of DADI's measurement business
DADI develops and manufactures electronic surveying instruments for angle, distance and position measurement.
Main product groups include total stations, electronic theodolites and GNSS/RTK systems.
DADI develops and manufactures laser guidance systems for pipe jacking, pilot tube construction and related trenchless alignment applications.
The DSD-IIIA Laser Guided Pilot Tube System is available in manual-focus and electric-focus configurations.
Industrial optical sensing and 3D perception technologies developed from DADI's measurement background
DADI applies optical distance measurement and positioning technologies to industrial automation and infrastructure monitoring.
Port & Crane Applications: Long-range laser sensing for gantry crane positioning, distance measurement and automation.
Structural Measurement: Optical distance and displacement measurement technologies for large-structure monitoring applications.
DADI develops and manufactures solid-state 3D LiDAR for industrial perception, obstacle detection and robotic applications.
The XT-03 Solid-State 3D LiDAR uses iToF technology for high-density 3D point-cloud acquisition.
Prisms, support equipment and field accessories for surveying and construction measurement
Prism solutions for total station distance measurement, control work, stakeout and construction surveying.
View Surveying PrismsField support equipment for total stations, theodolites, levels and related surveying instruments.
View TripodsCentering and support accessories for prism positioning, stakeout and field measurement.
View Prism Poles & BipodsLeveling staffs and rods for elevation measurement, road construction and engineering surveying.
View Leveling Staffs / RodsInspection of optical alignment, measurement geometry and system stability during production
Surveying instruments combine optical, electronic and mechanical subsystems that must operate together as a complete measurement system. DADI therefore applies inspection and aging procedures during production according to the instrument type and measurement system.
Third-party market research covering Changzhou DADI
Changzhou Dadi Surveying Science & Technology Co., Ltd. is included among the companies covered in the Land Survey Equipment - Global Strategic Business Report.
Company, manufacturing and measurement technology information
DADI is a manufacturer and R&D company. Changzhou Dadi Surveying Science & Technology Co., Ltd. develops and manufactures surveying instruments, laser guidance systems and industrial optical measurement products in Changzhou, Jiangsu, China.
DADI was established on January 19, 1991. The company began as the Changzhou Dadi Distance Meter Factory and later expanded its optical, electronic and laser measurement technologies.
DADI manufactures total stations, electronic theodolites, GNSS/RTK systems and related surveying and positioning instruments.
Yes. DADI develops and manufactures trenchless laser guidance systems for pipe jacking, pilot tube construction and other underground alignment applications.
For applicable optical surveying instruments, DADI uses collimator inspection to verify optical alignment and measurement geometry. Aging testing is also used during production to evaluate system stability before delivery.
Yes. DADI develops industrial laser sensing technologies and solid-state 3D LiDAR. The XT-03 Solid-State 3D LiDAR uses iToF technology for high-density 3D point-cloud acquisition.
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