... their shape, are generally divided into: glass type, Oxytropis type, the font, dry five kinds of fonts ... structural features are all kinds of tower-type space truss structure, and bars mainly by ... a few pieces of steel welded into an assembly, so hot-dip galvanizing corrosion, transport and construction, ... Observes Contracts and Keeps Promise' by the Industrial and Commercial Bureau of Qingdao from 2001 ...