1) White Film: White Film means PE Film without any additives, can be used for only 4 6 months. 2) Anti-aging Long life PE Film: With Anti-aging additives, thickness from 80 micron to 120 micron, can be used for 18 months. The additive not only extends the use life of the PE Film, save cost and energy; but also increases the output of the greenhouse. 3) Anti-aging and Anti-drip PE Film: Excellent for its non-drip, anti-fog, weather resistance, good light-transmission, and warm-keeping. With use life not less than 20 months. 4) Thermal PE Film: Can prevent infrared rays from escaping to the air, heighten 3 4°C inside the greenhouse. It is widely used in cold areas.