TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The nano filler comprises nano titanium dioxide and nano silica at weight ratio of 0.8-1.2:1.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The acrylate comprises methyl acrylate, ethyl acrylate and 2-ethylhexyl acrylate at weight ratio of 2-3:1.5-2.5:1. The methacrylate comprises methyl methacrylate, methacrylate, isopropyl methacrylate and cyclohexyl acrylate at weight ratio of 1.6-2.4:1:0.8-1.2. The methacrylic acid hydroxy ester comprises hydroxyethyl methacrylate and hydroxypropyl methacrylate at weight ratio of 1.4-2.2:1. The initiator comprises azobisisobutyronitrile, dibenzoyl peroxide and dilauroyl peroxide at weight ratio of 2.5-4.5:1.5-2.5:1. The solvent comprises butyl acetate and methyl isobutyl ketone at weight ratio of 1.8-2.6:1. The thermally conductive filler comprises nano aluminum nitride, nano boron carbide and nano silicon carbide at weight ratio of 2-3:1.5-2.5:1. The crosslinking agent comprises crosslinking agents and additive crosslinking agent at weight ratio of 8-10:1. The crosslinking agent comprises organic peroxide and azo compound at weight ratio of 1:0.8-1.2. The organic peroxide comprises dicumyl peroxide, peroxy-2-ethyl ethylhexyl carbonate and ethyl 3,3-di(tert-butylperoxy)butyrate at weight ratio of 1.8-2.6:0.8-1.2:1. The additive crosslinking agent comprises cyanuric triallyl and diethylene glycol dimethacrylate at weight ratio of 1:1.4-2.2. The coupling agent comprises vinyl triacetoxysilane, tris-tert-butyldioxy-vinylsilane and vinyl tris( beta -methoxyethoxy) silane at weight ratio of 1.4-2.2:1:2-3. The ultraviolet inhibitor comprises 4-(benzoyloxy)-2,2,6,6-tetramethylpiperidine and 2-hydroxy-4-(octyloxy)benzophenone at weight ratio of 1.8-2.6. The antioxidant comprises antioxidant 1010 and antioxidant 168 at weight ratio of 1:1-2.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The fluorine resin comprises PTFE, polyvinylidene fluoride and ethylene-tetrafluoroethylene copolymer at weight ratio of 1:1.8-2.6:3-4.