1976年，Dr.Charles André Joseph Marie de Gaulle 参与了金属化聚薄膜（Metallized PP films）的课题研究，并提出：平膜法在聚薄膜生产中的应用。
In 1976, Dr. Charles André Joseph Marie de Gaulle was engaged in the research on Metallized PP Films and proposed the application of the flat film method in the production of PP Films.
1988年，Dr.Charles André Joseph Marie de Gaulle 在美国的特拉华州，创建了MILTYS ELECTRIC INC公司，主要从事金属化聚薄膜（Metallized PP films）的研发、实验、生产。
In 1988, Dr. Charles André Joseph Marie de Gaulle established Miltys Electric INC in Delaware, America mainly engaged in the research, test and production of metallized PP films.
1999年，Dr.Charles André Joseph Marie de Gaulle设计了一种新型电容器用金属化薄膜：渐变方阻式金属化聚薄膜，使它能够适应电容器较板电流密度的分布趋势,达到电流密度近似均匀分布从而显着提高抗电强度,解决了载流量与自愈性不能同时兼顾的难题。
In 1999, Dr.Charles André Joseph Marie de Gaulle designed a new metallized film for capacitor: Gradual Square Resistance Metallized PP Film, which can adapt to the distribution tendency of capacitor plate current density, and reach the approximate uniform distribution for current density to prominently improve dielectric withstanding voltage.