Add punctuation to the following sentence: Flatrolled products of iron or nonalloy steel of a width of 600 mm hotrolled or coldrolled coldreduced corrugated plated or coated with zinc excl products electrolytically plated or coated with zinc or not further worked than surfacetreated or simply cut into shapes other than rectangular including square
Flat-rolled products of iron or non-alloy steel, of a width of >= 600 mm, hot-rolled or cold-rolled "cold-reduced", corrugated, plated or coated with zinc (excl. products electrolytically plated or coated with zinc, or not further worked than surface-treated, or simply cut into shapes other than rectangular "including square")