TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The flame retardant is expandable graphite, ammonium polyphosphate, melamine cyanurate, magnesium hydroxide, aluminum hydroxide, calcium carbonate, zinc borate, or kaolin. The flame retardant synergist is metal oxide, preferably magnesium oxide, aluminum oxide, zinc oxide, or ferric oxide, nanosilica, or silicate compound.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The thermal stabilizer is zinc stearate, magnesium stearate, calcium stearate, lead stearate, or hydrotalcite. The antioxidant is hindered phenol antioxidant, or phosphite ester antioxidant. The auxiliary antioxidant is metal deactivator, or hindered amine antioxidant. The silicone auxiliary agent is polyester graft-modified silicone additive, or fluoro resin-supported siloxane polymer. The sensitizer is trimethylolpropane triacrylate, pentaerythritol acrylate, or triallyl isocyanate. The mass ratio of hindered phenol amine antioxidant, phosphite ester antioxidant, hindered amine auxiliary antioxidant, and metal deactivator is 1:(1-2):(1-2):(0.5-1). The flame retardant synergist is FRP-33 flame-retardant synergist. The thermal stabilizer is metal stearate and hydrotalcite in a mass ratio of 1-3:1. The primary antioxidant is hindered phenol tetrakis( beta -(3,5-di-t-butyl-4-hydroxyphenyl) propionate), or beta -(4-hydroxy-3,5-di-t-butylphenyl) propionate. The secondary phosphite antioxidant is bis (2,4-di-t-butylphenyl) pentaerythritol diphosphite, or dioctadecyl pentaerythritol phosphite. The secondary antioxidant is hindered amine, preferably 4,4'-bis( alpha , alpha -dimethylbenzyl) diphenylamine. The metal deactivator is (3,5-di-t-butyl-4-hydroxyphenyl) propionic acid oxalyl(diimino-2,1-ethyl ester).    TECHNOLOGY FOCUS - POLYMERS - Preferred Property: The thermoplastic polyester elastomer has Shore hardness of 60 D or less. Preferred Composition: The halogen-containing resin is chlorinated rubber resin, halogenated butyl rubber, halogenated ethylene-propylene rubber, halogenated styrene-butadiene-styrene, fluororubber, fluorosilicone rubber, or fluoroplastic. The fluororubber is Viton A-HV (RTM: fluororubber). The black masterbatch is polyolefin, or halogen-containing rubber carrier.