1-Structure: Hot galvanized steel tubes, Triple-A Roof structure per bay. 15 year warranty

2- Covered by twin-wall polycarbonate sheet.10 year warranty. Anti-storm. Anti-hail. Anti-Snow. Best material for warm-keeping.

3-Strength: Long life ,Good looking, Warm keeping. Energy saving in winter.

4-Suitable for heavy snow place, flower market, expensive flower & vegetable planting, research center or restaurant.