... produces and exports the following:Persian Silk Rug (Grade A), 300-400 lines, usd72/sq.ft.Persian Silk Rug (Grade B), 230-260 lines ... , usd42/sq.ft.Persian Silk Rug (Grade C), 200-230 lines, usd22.5/sq.ft.Wool ... /silk Mixed Rug, 200 lines, usd37.5 ...