Company Scale

Our main headquarters cover an area of over 3,000 square meters. Our production base is located in the Jinan Mingshui Economic Development Zone, Guangdong Foshan and Hunan Yiyang. Our factory includes a total area of over 300 thousand square meters. Currently, our group includes 8 production bases, 7 operating centers, 8 sales companies, one financial leasing company and one import and export company. Dahan has a rich experience in manufacturing and serving. Our annual output reaches over 10 thousand sets. 

Production Process

Quality Control of Raw Materials
Some of the materials and electrical systems products we use are supplied by four main institutions and many other great companies, some of these well-known enterprises are, Baosteel, Anshan Steel, Laiwu Steel, Wuhan Iron and Steel, Schneider and others. All raw materials have gone through multiple tests, including appearance testing and tensile testing etc. The superior quality of the products we provide are first and always, guaranteed.
Our materials from big companies as Baosteel, Schneider, and others. All materials go through appearance testing, tensile testing and other serials testing.

Production Equipment
Our firm is the first to introduce welding robots within the tower crane industry of China, and now we are operating over 100 sets. We own the most advanced shot blasting and paint spraying line in the world, and we have introduced a total of 12 lines. Additionally, we hold over 1,000 sets of processing equipment, such as the CNC plasma cutters, CNC drilling machines, lathes, milling machines, sawing machines and others. 
Among them, there are 60 sets of mast section and limb welding robots from Panasonic Japan, 20 sets of standard section and limb welding robots from ABB Sweden, 20 sets of turntable welding robots from Panasonic Japan, and the split mast section welding robot for fishplate welding. 
Our firm is the first to introduce welding robots to tower crane industry in China, We own the most advanced shot blasting and paint spraying line in the world

Production Process
Both the CNC plasma panel cutting machine and CNC profile sawing machine provide high cutting performance which are  precise to less than 1mm. The precision of the baiting size of raw materials and the interchangeability of materials are guaranteed from the very beginning. Adopting 80% argon and 20% carbon dioxide as welding gas and the weld penetration 30% deeper than carbon dioxide make the welding quality more stable than before. 
Both the CNC plasma panel cutting machine and CNC profile sawing machine provide high cutting performance which are  precise to less than 1mm. Adopting 80% argon and 20% carbon dioxide as welding gas to make the welding quality more stable than before. 

Complete Machine Testing
Before leaving out of the factory, each main welding part of the machine must experience the flaw detection, paint film thickness detection, salt spray corrosion resistance test, electronic system test, complete machine debugging and other process, so that the product delivered into our clients posession is safe and reliable.