A chemical-resistant composite material prepared by applying to a base material a fluoropolymer excellent in the adhesion thereto without necessitating complicated steps. This material is prepared by applying to a base material a fluoroethylene polymer having functional groups and prepared by copolymerizing: (a) 0.05 to 30 molar % of at least one fluoroethylenic monomer having at least one functional group selected from among hydroxyl, carboxyl, carboxylic salt, carboxylic ester and epoxy groups, and (b) 70 to 99.95 molar % of at least one fluoroethylene monomer free from the above functional groups.
