... Trench Cover characteristics:1, the appearance of Galvanized Trench Cover is beautiful: line forthright, silver appearance, the modern trend.2, ... the optimal drainage: leaking area of 9, is cast twice as much.3, hot-dip galvanized: rustproof ... is simple construction, light weight, carrying good, impact resistance, ning bending don't fold, displacement, after hot-dip zinc processed beautiful ...