1.Have and can regulate elasticity make roottension balanced device of line at will .

2.Free necessary length parks and establishes the device . Guarantee and requires it definitely quantity is accurate.

3.Shelf adopt and bring transmission in ster by glue , person who make platform tyrn round stably , have noise .

4.Pass record load and adopt pneumatic to control , stability high platform of making etc .,it is more convenienttooperate.

5.Can be chosen and offered by the customer by a size to select for use, or according to the customer it is a design to need taking the place of .

6.Line shelf-figure number fans of 60-72,84 for choosin