The traditional cast iron gate, because the use of cast iron materials, relatively high density, heavy weight, the iron door high price, poor performance; the anti-theft performance is very poor, but also to the drainage system caused problems, glass steel door, no recycling value, is to solve this problem. The iron door caused although the weight of raw materials, raw material price is low, but due to its weight than fiberglass material weight, so the steel door price has obvious advantages in the performance, the performance advantages of the glass steel door far beyond the iron gate, because the iron door weight, the opening is difficult to death big head loss. Originally, glass steel door does not exist a problem.