2- Color: Transparent, Sky-Blue, Yellow & Purple.

3- Material: PE+EVA Mixed.

4- Warranty: 3yesrs, 5yesrs life.

 There are several colors for optional as covering material, Transparent, Sky-Blue, Yellow, Purple, etc. Different colors have different features.

Transparent--Good for plants to carry out photosynthesis. Most widely used! Almost suitable for all plants!
Sky-Blue----- Good to promote the synthesis of chlorophyll and increase the temperature inside! Popular Style.
Yellow--------- Some Rate of sunshine shading.
Purple--------- Increase the light transmittance; Increase plants colored. So purple film is better for colored plants, especially that is hard to be colored,like grape, etc.