TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The additives are inorganic additives (preferably clay, silicon oxide, calcium oxide, titanium oxide, and/or aluminum hydroxide.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The additives are organic additives (preferably brominated additives or phosphorated additives). The curing agent is amine compound of 4,4'-methylene dianiline (MDA), diamino diphenyl sulfone (DDS), benzyl dimethyl amine (BDMA), or the imidazole compounds such as 2-methyl imidazole (2MI), acid anhydrides, phenol novolak, dicyandiamide (DICY) and/or boron trifluoride monethylamine (BF3MEA). The accelerator is imidazole compounds including 2MI, 2-phenyl imidazole (2PI), 2-ethyl-4-methyl imidazole (2E4MZ) or BF3MEA; and/or amine compounds including benzyl dimethyl amine (BDMA).    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The fiber glass cloth comprises the cloth made of continuous glass fiber by weaving process or the non-woven glass fiber mat, paper or synthetic fiber. The additives are engineering plastics (preferably modified engineering plastics or non-modified engineering plastics), defoamer and/or flattening agent. The epoxy resin is bisphenol A type epoxy resin, bisphenol F type epoxy resin, tetra-function epoxy resin, multi-function epoxy resin, brominated epoxy resin and/or phosphorated epoxy resin. EXAMPLE - NPEB-454 (RTM: brominated epoxy resin) (84 Wt.% 425 g/equivalent (eq)), EL-128 (RTM: liquid Epoxy resin) (13 Wt.%, 185 g/eq), were mixed with dicyandiamide (2.8 wt.%) and 2-methyl imidazole (0.2 wt.%). The mixture was dissolved in the solvent of acetone and dimethyl formamide and adjusted the solution into varnish with solid contained of 60-70 wt.%. The glass fiber cloth 7628 was soaked in the varnish and then put in oven. The proportion of cloth to resin was controlled at 1:1. The glass fiber cloth was pre-dried into incompletely cured prepreg, and then prepreg was cured with hot-press machine to give prepreg (test). Bronminated epoxy resin (61.5 Wt %), liquid Epoxy resin (9.8 wt %), mixed with acid anhydride curing agent (MTHPA) (28.7 wt %), benzyl dimethyl amine (BDMA) (0.04 wt %), were mixed and blended into uniform mixture. The resin mixture was applied on glass fiber cloth by silk screen printing machine, and the cloth was cured by hot press machine to give prepreg (comparative). The pre-dried incompletely cured prepreg were cut into appropriate size, then the prepreg sheets were bonded by hot press machine, and the size of the resin flow of the press-bonded prepreg was measured. The test prepreg did not show prepreg flow, whereas the comparative showed resin flow.