The video shows Great Wall Machinery Slag Powder Demonstration and Training Base with Annual Production of 600,000t. Presently, the project has recovered investment costs through 3 years of operation, as well as began to steady profits. On the other hand, the production line brings greater values in demonstration effect. Customer enhances confidence to the product quality of Great Wall Machinery after visits on-site production, and it plays important role for Great Wall Machinery to obtain more orders of general contracting.