Challenges from internal and external. First, inside the industry, more and more competitors, some of the later to join operator to footing in the market, have to compete on price as the means to improve their awareness of sales, this will make the whole storage shelving industry overall decline in profits. Pressure from outside, the external environment is also very serious, customers are increasingly demanding in the quality of storage shelving, battalions more and more strict. This brings to the storage shelves factory test.