An engineering company from China, focused on one problem:
making bulk material flow – intelligently, safely and without downtime.
——OUR COMPANY
Empowering Innovation, Defining the Industry
Devondi is the international brand of Defengdi Technology Co., Ltd. , operating defengdi.com in Chinese. It is a pioneering leader in intelligent bulk material handling. With over 30 years of expertise in bulk material storage and transportation, we focus on “Intelligent & Unmanned Operations” through a core product ecosystem covering blocking prevention, smooth flow, crushing, and smart control:
- Intelligent Silo Management System: Features predictive warnings and automated unblocking for silos and hoppers.
- FBC Chute Smooth-Flow System: Eliminates material accumulation and clogging in transfer chutes.
- Oversize Crushing System: Solves bottlenecks in processing oversized materials.
- Unmanned Conveying System: Leverages IIoT and automation to drive autonomous belt conveyor operations.
——WHAT WE DO
Independent Research and Development
Core products including storm flow aids, FBC systems and linear vibrators are all self-developed and fully in-house controllable.






Unmanned System Solutions
An integrated platform combining equipment, automatic control and data analytics to fully realize site unmanned operation.
Over 30 Years of Industrial Expertise
Our team boasts over two decades of in-depth experience across non-ferrous metallurgy, coal, chemical and other sectors, with profound insights into bulk material properties and production process rhythms.


Full-lifecycle Service
Closed-loop delivery covering on-site investigation, customized solution design, equipment delivery, aftersales operation & maintenance training.
——QUALITY & CERTIFICATIONS






QUALITY YOU CAN VERIFY
Certified quality management across design, formulation and fabrication.
PRODUCT TRACEABILITY
Every production batch is fully recorded and completely traceable.
FACTORY TESTING
All products are professionally tested. Pre-shipment inspection videos provided.
——SERVICE & SUPPORT
AFTER THE SALE IS WHERE WE PROVE IT
INSTALLATION GUIDANCE
Remote commissioning support or on-siteengineers, depending on project scope.
SPARES IN STOCK
Genuine components ready to ship. Minimize downtime, maximize efficiency.
24H RESPONSE
Dedicated export support team; every technical query answered within one business day.
MATERIAL SHOULD FLOW. LET'S MAKE IT FLOW.
Describe your blockage, carryback or mistracking problem — a DEVONDI engineer
replies with a solution concept within 24 hours.
