1. Saving information;
2. Cut capital contribution;
3. Simple construction;
4. Saving the construction period;
5. Durable;
6. Modern tolerance;
7. The structure is simple;
8. Anti-dirt;
9. Cut wind resistance;
10. The design is simple;
11. Ventilation, lighting, heat dissipation, explosion-proof, good anti-skid performance;
12. Good corrosion resistance.
