Precision Engineered Since 1991
Changzhou Dadi Surveying Science & Technology Co., Ltd. (DADI) is a premier manufacturer of high-precision optical instruments, established on January 19, 1991. Based in the Changzhou National High-tech District, we specialize in the R&D of Geospatial Surveying Instruments, Trenchless Laser Guidance Systems, and Industrial Sensing Solutions.
Heritage & Verification
Our roots are deep. Originally founded as the Changzhou Dadi Distance Meter Factory within the campus of Changzhou Institute of Technology, we carry the DNA of academic rigor.
Precision is mandated by law and perfected by design.
Authorized manufacturer bearing MC 04000129 and CPA 2009E192-32 marks.
Developed under the direct guidance of Chairman Mr. Zhou Ronghua, ensuring pixel-perfect logic.
Performance strictly verified by the Nanjing Institute of Measurement (NIMTT).
Driving the Future of Measurement
The DSD-IIIA Laser Guided Pilot Tube System is the standard for Pipe Jacking guidance in Southeast Asia.
Classic Manual Focus: The benchmark for tactile precision.
New Electric Focus (Early 2026): Motorized edition for automated efficiency.
Providing the "eyes" for heavy industry. Our 2026 roadmap focuses on high-value dynamic positioning.
Port & Crane: Long-range Laser Sensors for Gantry Cranes.
Structural Health: Precision displacement sensing for dams and bridges.
Entering the robotics era with Solid-State technology.
XT-03 Solid-State LiDAR (iToF):
In complex opto-electronic systems, stability is the ultimate challenge. We understand that a Total Station is not just a collection of parts—it is a precise integration.
With complex PCBs housing thousands of sensitive electronic components, our philosophy is "Rigorous System Stability". Unlike manufacturers who only sample-test, DADI enforces 100% collimator inspection and aging tests for every unit.
| Entity | Details |
| Established | January 19, 1991 (Founded at Changzhou Institute of Technology) |
| Founder & Mentor | Mr. Zhou Ronghua (Chief Architect of Absolute Encoder & EDM Systems) |
| Licenses | MC 04000129 (Manufacturing) & CPA 2009E192-32 (Pattern Approval) |
| Certifications | NIMTT Verified (CNAS Accredited) |
| New Release | DSD-IIIA Electric Focus Edition (Post-Spring Festival 2026) |
| Key Markets | Surveying, Port Logistics, Robotics, Trenchless Construction |
Contact our customer support
team 7×24 hours
WhatsApp:+86-+86 18915003276
