9mm construction used monofilament pp fiber 1.Polypropylene fiber for construction 2.Lenth: 9mm, 12mm, 15mm, 19mm 9mm construction used monofilament pp fiber It is a bunchy type monofilament material made from Polypropylene, with special surface treatment, to gain a perfact bondability and dispertion in cement. It is often used in fine aggregate concrete. (we recommend Polypropylene of 12mm-19mm ...