... structure strengh, hot dip galvanized, greatly protracted time of use. Frame is easy for use, functional, agile, and safe. High structure ... strengh, hot dip galvanized, greatly protracted time of use.Frame is easy for use, functional, agile, and safe.Easy for ... .)5. Systematized facilities and stage can be formed in a system that can ensure the safety and improve efficient.6. Super ...