25mm HDPE sheets for Fish farming China Damp Proof Membrane Sheet for Aquaculture Fish Farming 0.5mm 0.75mm 1.0mm 1.5mm 2.0mm 3.0mm HDPE Geomembrane Dam Landfill Fish/Shrimp Pond Liner with ASTM Gri GM13 Standard 100% Virgin Material US $0.3-2.9 / Square Meter Factory Price Waterproof HDPE Film Smooth/Textured Geomembrane Pond Liner Membrane