PEN 70 black net made of strong monofilament yarns which can effectively keep the wermin away outside and prevent the fierce of hail and downpour. It is a kind of more economic and practical product. Low shrinkage and long service life,and help to protect from both acidic and alkaline chemicals in greenhouse.Cooling by 3-5℃ effctively in hot summer.The screen is suitable for all types of installation.