▎ 摘　　要

NOVELTY - Fluorine-containing resin composite film comprises fluorine-containing resin and mixed fillers, the mixed filler includes first filler, second filler and third filler, the ratio of the length to the diameter of the first filler is ≥5, the thickness of the second filler is ≤ 0.3 μm and the maximum projected area is ≥2 μm2, so the median particle size D50of the third filler is 0.5-30 μm. USE - The fluorine-containing resin composite film is useful in product (claimed). ADVANTAGE - The film: provides limit film thickness of 0.2-0.5 mm. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing fluorine-containing resin composite film, comprising mixing the mixed filler with solvent and fluorine-containing resin emulsion to obtain formulation, then coating and heat-treating the preparation to obtain final product.