Regarding the choice of spiral pound top specifications: Many customers still know what tonnage they need, or have a clear procurement plan. However, some customers have not used this product's choice of tonnage. Then the standard load that corresponds to the weight of the cargo can also be used to use a small tonnage jack, but the amount of load is required to increase the amount of load. For example: I need 100 tons of spiral jacks, and after the price is reported. There is a part of the customer's consciousness and the budget. After discussing with the technical department, the customer decided to use two 50 tons. Because the total price of two 50 tons is less than a 100 -ton jin.