TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The aromatic diamines or aromatic polyamines comprise meta-phenylenediamine, 4,4'-diaminodiphenyl sulfone, 4-aminobenzenesulfonamide, 4,4'-diaminodiphenyl ether, 4,4'-(1,3-phenylenedioxy)dianiline, 4,4'-diaminodiphenyl methane or their derivatives.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The fluoropolymer layer comprises poly(chlorotrifluoroethylene), poly(tetrafluoroethene), tetrafluoroethylene hexafluoropropylene copolymer, poly(vinylidene fluoride or fluorosilane polymer. The non-fluorinated polymer layer comprises ethylene vinyl acetate copolymer, polyamide, polyimide, polyurethane or polyolefin. The aromatic diamines or aromatic polyamines have molecular weight of 100-400 g/mol. The first and second sealing material comprises ethylene vinyl acetate copolymer, polyamide, polyimide, polyurethane or polyolefin. Preferred Method: The adhesion promoter layer is formed between the fluoropolymer layer and the non-fluorinated polymer layer by a coating, spraying or dipping method. The hot pressing is performed at 150-190 degrees C for 0.5-2 hours. EXAMPLE - An adhesion promoter layer comprising meta-phenylenediamine (5%) was dissolved in methanol to form the methanol solution. The methanol solution was coated on substrate containing fluoropolymer layer (which was made by fluorine-siloxane polymer coating on polyethylene terephthalate, and the fluorine-siloxane polymer was doped with TiO2 (15 wt.%), and the fluorine-siloxane polymer had average molecular weight of 10000 g/mol). The substrate was put in an oven at 40 degrees C for 30 minutes to remove the solvent. Then, RCO2B (RTM: ethylene vinyl acetate copolymer) was put on the substrate. The RCO2B and the substrate were pressed at 150 degrees C at 100 Kpa for 30 minutes or 1 hour. After removing the pressure, the substrate was cooled down to room temperature to obtain a multilayer composition which had no yellowing phenomenon. Adhesion strength was found to be 20.6 kg.