TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The organic peroxide is 2-vinyl hexyl peroxycarbonate, tert-butyl peroxide, n-butyl-4,4-di(tert peroxy)valerate, dicumyl peroxide, bis(tert-butyl dicumyl peroxide) and/or 2,5-dimethyl-di(tert-butylperoxy)hexane. The content of organic peroxide is 0.1-2 parts weight. The auxiliary crosslinking agent is unsaturated compound having one or more double bonds chosen from triallyl cyanurate, triallyl isocyanurate, ethylene glycol dimethacrylate, trihydroxymethylpropyl trimethacrylate, divinyl benzene and diallyl phthalate. The content of auxiliary crosslinking agent is 0.1-2 parts weight. The silane coupling agent is vinyltriethoxysilane and/or ( gamma )-glycidyloxypropyl trimethoxysilane. The content of silane coupling agent is 0.1-1 part weight. The light stabilizer is bis(2,2,6,6-tetramethyl-4-piperidinyl)sebacate. The content of light stabilizer is 0.1-0.5 part weight. The ultraviolet absorbing agent is 2-hydroxy-4-n-octoxy benzophenone. The usage amount of ultraviolet absorbing agent is 0.1-0.5 part weight.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The content of vinyl acetate in ethylene-vinyl acetate copolymer is 25-28 wt.%. The ethylene-vinyl acetate copolymer plastic film comprises (in parts weight) ethylene-vinyl acetate copolymer (100), organic peroxide (0.1-2), auxiliary crosslinking agent (0.1-2), silane coupling agent (0.1-1), light stabilizer (0.1-0.5), ultraviolet absorbing agent (0.1-0.5) and fluorescent brightening agent (0.0001-0.01). Preferred Properties: The ethylene-vinyl acetate copolymer has melt index of 20-30 g/10 minutes at 190 degrees C and load of 2.16 kg, and melting point of 70 degrees C or more, measured by differential scanning calorimetry. Preferred Process: A fluorescent brightening agent and portion of ethylene-vinyl acetate copolymer are blended to form brightening masterbatch. The concentration of fluorescent brightening agent in brightening masterbatch is 0.2-0.5 wt.%.