TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The thermal curing agent is amine-type curing agent, acid anhydride curing agent, imidazole-type curing agent, carboxyl group-containing curing agent, phenol-type curing agent and/or maleimide-type curing agent. The solvent is acetone, methylethyl ketone, dimethyl formamide and/or dimethyl acetamide.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The fluorinated polymer is vinylidene fluoride, vinyl fluoride, tetrafluoroethylene, hexafluoropropylene, chlorotrifluoroethylene, trifluoroethylene, hexafluoroisobutylene, perfluorobutyl ethyene, perfluoro methyl vinyl ether, perfluoro ethyl vinyl ether, perfluorohexyl vinyl ether, perfluoro propyl vinyl ether and/or perfluoro-2-methylene-4-methyl-1,3-dioxolan. The resin composition contains 0.5-50 wt.% of comonomer. The acryl polymer is (meth)acrylate, alkyl(meth)acrylate and/or isobornyl (meth)acrylate. The acryl (meth)acrylate is methyl(meth)acrylate, ethyl(meth)acrylate, propyl(meth)acrylate, n-butyl(meth)acrylate, isobutyl(meth)acrylate, tert-butyl(meth)acrylate, hexyl(meth)acrylate, 2-ethylhexyl(meth)acrylate, n-octyl(meth)acrylate, isooctyl(meth)acrylate, n-nonyl(meth)acrylate, isononyl(meth)acrylate, n-decyl(meth)acrylate, isodecyl(meth)acrylate, n-tridecyl(meth)acrylate and/or n-tetradecyl(meth)acrylate. The acryl polymer further contains polymerizable monomer chosen from styrene, chlorostyrene, chloromethylstyrene, methylstyrene, methacrylonitrile, acrylonitrile, cyclohexyl maleimide and/or hydroxyethyl(meth)acrylate. The resin composition further contains hardening accelerator, pigment, filler, ultraviolet stabilizer, thermal stabilizer, barrier particles and solvent having boiling point of 200 degrees C or less. The base material is aluminum, iron, and/or polyethylene terephthalate. Preferred Properties: The fluorinated polymer has weight average molecular weight of 50000-1000000, melting point of 80-175 degrees C and crystallinity degree of 55% or less. The multilayer film has thickness of 3-50 nm.