TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The modified filler is prepared by adding silicate filler into water, heat-stirring mixture, adding cation exchanging aqueous solution, washing mixture with deionized water, filtering and drying obtained cake, grinding dried cake to obtain treated filler, mixing treated filler with anhydrous ethanol, ultrasonically stirring, adding acrylate and initiator, heat-reacting and grinding reaction product to obtain modified filler. The silicate filler is sodium treated bentonite, sodium treated montmorillonite. The acrylate is methyl acrylate, ethyl acrylate, butyl acrylate, methyl methacrylate or butyl methacrylate. The cation exchanging agent is bromo-hexadecyl pyridine, hexadecyl trimethyl ammonium bromide or octadecyl trimethyl ammonium chloride. The initiator is azobisisobutyronitrile, azodiisoheptonitrile or dibenzoyl peroxide. The peroxide cross-linking agent is tert-butyl-o-(2-ethylhexyl)-mono-peroxydicarbonate, n-butyl 4,4-di(peroxy-tert-butyl)valerate, 2,5-dimethyl-bis(benzoylperoxy)-hexane and/or 1,1-bis(tert-butylperoxy)-3,3,5-trimethyl cyclohexane. The phenol or phosphite antioxidant is 2,2'-methylene-bis-(4-ethyl-6-tert-butyl phenol), di-stearyl pentaerythitol diphosphite, 1,3,5-tri(4-tert-butyl-3-hydroxyl-2,6-dimethyl benzyl)-1,3-5-triazine-2,4,6-(1H,3H,5H)-triketone/tri(2,4-ditert-butyl phenyl) phosphite compound and/or 1,3,5-tri(4-tert-butyl-3-hydroxyl-2,6-dimethyl benzyl)-1,3-5-triazine-2,4,6-(1H,3H,5H)-triketone/di(2,4-dicumyl phenyl) pentaerythritol phosphite compound. The hindered amine photostabilizer is bis-1-decyloxy-2,2,6,6-tetramethyl piperidyl-4-alcohol sebacate, polymer of succinic acid and 4-hydroxy-2,2,6,6-tetramethyl-1-piperidine alcohol, polymer of N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)-1,6-hexamethylenediamine and 2,4-dichloro-6-(1,1,3,3-tetramethyl butyl)amino-1,3,5-triazine and polymer of bis(1,2,2,6,6-pentamethyl-4-piperidyl)sebacate/methyl-1,2,2,6,6-pentamethyl-4-piperidyl sebacate.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The content of vinyl acetate in the ethylene vinyl acetate copolymer is 7-33%. The vinyl copolymer is metallocene catalyzed ethylene-pentene copolymer and/or ethylene-octylene copolymer. The ethylene content in the vinyl copolymer is more than 60%, and the melt index of the vinyl copolymer is 7-45 g/10 minutes.