1. Make sure his position is correct, shape, size, etc. fully meet the requirements of the design drawing.

2. Sufficient bearing capacity and stability to withstand various loads under various conditions during construction.

3. Simple structure, easy to install and disassemble, flexible to use.It can meet the requirements of binding steel bar, is suitable for centralized manufacturing, saves raw materials, improves efficiency, speeds up work, and can meet the requirements of subsequent processes.