Glass fiber product for use in the reinforcement of fluororesin
 Here is disclosed a glass fiber product for use in the reinforcement of fluororesin which is improved in the adhesiveness to fluororesin. Thus, a glass fiber product for use in the reinforcement of fluororesin pre-treated with perfluoroalkylsilane represented by the following formula: EQU CF.sub.3 --CH.sub.2 --Ch.sub.2 --SiX.sub.3 (X is a hydrolyzable group such as alkoxy groups having 1 to 4 carbon atoms) retains an excellent electrical insulation resistance. 
Nitto Boseki Co., Ltd.
Y Y Y C H Y Y C C H H Y Y H C
Y10T Y10T Y10T C08J H05K Y10T Y10T C07F C08J H05K H05K Y10T Y10T H05K C03C
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Shoichi Hirokazu
Watanabe Inoguchi