To track the use of: a fixed point of the device to design, assemble into cast beam platform, mainly for large equipment assembly, testing, welding and inspection. 
 To track the benefits: do not make such a large platform, which saves material costs, but also takes up very little space, can be described as high cost. 
 To track material: high-strength cast iron HT200-300, face hardness of HB170-240, after two manual processing (annealing 600 degrees -700 degrees artificial and natural aging 2-3 years) so that the accuracy of the product stable, wear-resistant performance.