the back of 260lines hand-knotted  persian silk carpet

This picture shows the back of 260 lines Persian hand-knotted silk carpet z203306. The knots are very clear and dense. There are 22 lines of knots per inch and there are 470real tied double knots per square inch(470KPI). For this quality hand-knotted silk rug, each person can makearound 2.25 square feet per month.