TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The antioxidant is of formula (I) or (II).R1-R5=H or 1-8C alkyl;X=single bond or -CHR6-;R6=R1;A1,A2=2-8C alkylene;andA3=single bond or A1.The resin composition further contains additive chosen from a different antioxidant, crosslinking agent, crosslinking adjuvant, silane coupling agent, ultraviolet absorber and optical stabilizer.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The polymer (A) is ethylene- alpha -olefin type copolymer (A1) or propylene- alpha -olefin type copolymer (A2) with density of 0.86-0.92 g/cm3. The copolymer (A1) has density of 0.86-0.92 g/cm3, melt flow rate of 0.05-50 g/10 minutes at 190 degrees C and load of 21.18 N, melt viscosity ( eta asterisk1) of less than 9.0x 104 poise at shear rate of 2.43x 10/second and 100 degrees C, and melt viscosity ( eta asterisk2) of less than 1.8x 104 poise at shear rate of 2.43x 102/second and 100 degrees C. The polymer (A) is manufactured using a single site catalyst. The resin material (X) contains 5-95 wt.% of copolymer (A1) with density of 0.86-0.92 g/cm3, polyolefin resin (B) chosen from high pressure radical method low density polyethylene (B1), ethylene vinyl ester copolymer (B2), very low density polyethylene resin (B3) with density of 0.86-0.91 g/cm3, linear low density polyethylene resin (B4) with density of 0.91-0.94 g/cm3, high density polyethylene resin (B5) with density of 0.94-0.97 g/cm3, ethylene- alpha -olefin copolymer rubber (B6) and polypropylene resin (B7). A surface protection layer, sealing material which seals the solar cell element from both sides, a solar cell element and a back surface protective material are further contained in the solar cell module. A water vapor barrier layer is provided between the surface protection material and sealing material. The water vapor barrier layer consists of film containing polyester-type resin, polyamide-type resin, ethylene vinyl acetate copolymer saponified substance, polyvinylidene chloride-type resin, fluoro resin or polypropylene resin, stretched film or film containing the resin and having inorganic oxide vapor deposited on the surface.