Color steel arched roof using build cow barns, compared with traditional steel construction, it have below strong points:

1.no beam and purlin design : increase view field in height, no pillar in middle of construction, widen using space,
2. connected by seaming and whipstitch without using bolts and rivets, so have good waterproof quality and never leak, service life touch over 40 years.
3.resistant wind and snow:  snow won't be accumulated,heavy wind won't lift the roof cover.
4.good quality of anti-heat: heat insulating material is same as freezer insulation medium, also we'll add flame retardants when operate, so have good fire resistant.