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   Grandon Technology Limited is a company that professional to R&D,manucture and trade electrical equipments and components of Switchgear Panel upto 40.5KV. We has a top-ranking R&D team, a complete set of advanced research and development testing equipments, a set of modern management system. By now, we have established long-term cooperation with several famous universities.  And has been successfully completed a number of scientific research cooperation projects, in which more than tens of national patents have been put in use of our products. 

Grandon Technology Limite now totally has 40,000 square meters of modem standard workshops, a number of first-class production and test equipments, three dedicated engineering teams with many years experiences. Now Grandon's producing capacity to assamble panels is more than 20000 sets per year. 
After established , Grandon with strong R&D strength and the first-class products, good reputation has been gotten the wide recognition of domestic and oversee markets, Customers are throughout the country and more than 30 countries in the world. Grandon is becoming the leading company and professional manufacturer eletrical equipments to serve the Electrical Induistry through acoross the world.
Cubicle Substation
Professional experts for Electrical Products
Switchgear Panel
Isolation Switch
Circuit Breaker/Recloser
Instrument Transformer
Advanced Producing&Test Equipments
Robot Welding System
The box body is welded by robot, which is more reliable than the traditional manual welding, and the weld is more beautiful. This equipment adopts IRB2600 series robots (ABB), and is the first time in China to apply the visual vision system to the welding of inflatable cabinet products, so as to greatly improve the welding quality and welding speed.
Helium Leak Detector

Dry leak detection is carried out on the switch cabinet box through the helium leak detector, and the workpiece and the vacuum box are evacuated synchronously, so that the pressure difference between the inside and outside of the workpiece is not more than 0.04Mpa, the tested workpiece is filled with helium, and the vacuum box method is used to detect the tightness of helium mass spectrometry, so as to ensure that the annual air leakage rate of the product is less than 0.1%.


Full-Auto Producing line
The assembly line adopts an integrated design, and the main processes of the product are completed on the assembly line, so as to ensure product quality and production efficiency.


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