White anti-corrosion hdpe-HDPE sheets 4×8, Custom HDPE sheets . Inner side, it is green cross laminated HDPE film (High Strength, Tear Resistance); Outer side is white fluorine film (Aging or Weather resistance, up to 25 years). Advantages: 1. Excellent properties of anti-aging, up to 25 years 2. UV resistance 3. Reflectivity of over 85%-90% 4.