Some 217 domestic companies are also present in the four-day exhibition.
The foreign participants include Germany, Italy, France, Britain, India, Turkey, Russia, UAE, Australia, China, Switzerland, Bulgaria, Czech Republic, Sweden and Taiwan.
The exhibition is to display products related to steel, mining and mineral industries, casting, non-ferrous metals industry, refractories, related projects and valves.
According to the exhibition website, international exhibitions provide companies with a great opportunity to showcase their brands and advantages in a spacious market and develop their network of business partners in new regions.