TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The inorganic material is titanium dioxide, silicon dioxide, carbon black, calcium carbonate or barium sulfate. The filler is titanium dioxide, calcium carbonate, barium sulfate, carbon black, iron black or silica.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The crosslinking agent is t-butylperoxy isopropyl carbonate, 1,1-bis (t-butylperoxy)-3,3,5-trimethylcyclohexane, 2,5-dimethyl-2,5-bis(t-butylperoxy) hexane, t-butylperoxy-2-ethylhexyl carbonate, 2,5-dimethyl-2,5-di (t-butylperoxy) hexane, 1,1-bis(t-butylperoxy)-3,3,5-trimethylcyclohexane, 1,1-bis(t-amyl peroxy) cyclohexane, 1,1-bis (t-butylperoxy) cyclohexane, 2,2-bis(t-butylperoxy) butane, peroxy-2-ethylhexyl carbonate or t-amyl peroxy carbonate. The antioxidant is 2,2'-methylene-bis-(4-methyl-6-t-butylphenol), tris(2,4-di-t-butylphenyl)phosphite, 1,3,5-tris(4-t-butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione, 2,2'-methylene-bis(4-ethyl-6-t-butylphenol), bis(2,4-dicumylphenyl) pentaerythritol diphosphite, distearyl pentaerythritol diphosphite or tris(nonylphenyl) phosphite. The light stabilizer is 3,5-di-t-butyl-4-hydroxy-benzoic acid hexadecyl ester, tris(1,2,2,6,6-pentamethyl-4-piperidyl) phosphite, N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)-1,6-hexanediamine or 2,4-dichloro-6-(1,1,3,3-tetramethylbutyl) amino-1,3,5-triazine. The curing agent is isocyanate, amino resin, blocked isocyanate or melamine. The adhesion promoter is dibutyl tin dilaurate, dioctyl tin dilaurate, monobutyltin oxide or stannous octoate. The solvent is toluene, xylene, ethyl acetate, butyl acetate or propylene glycol methyl ether acetate.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The water absorption of superabsorbent is 500 g/g or more. The superabsorbent is cross-linked sodium polyacrylate, modified polyvinyl alcohol and/or graft acrylamide. The binder is ethylene-vinyl acetate copolymer, metallocene catalyzed polyethylene, ethylene-octene copolymer or ethylene-pentene copolymer. The polyester base layer contains 100 parts mass resin chosen from polyethylene terephthalate, polybutylene terephthalate and polyethylene naphthalate, 0-20 parts mass inorganic material, 0.1-5 parts mass anti-hydrolysis agent and 0.1-2 parts mass antioxidant. The weather-resistant layer contains 100 parts mass resin chosen from fluoroethylene-vinyl ether copolymer, vinyl fluoride-vinyl acetate copolymer and alkyl vinyl ether and tetrafluoroethylene copolymer, 5-50 parts mass modified resin, 5-20 parts mass curing agent, 0-30 parts mass filler, 0.5-2 parts mass adhesion promoter and 20-100 parts mass solvent.