The capacitor takes heavy-edge metalized al/zn pp film or web-like safety film as dielectric. the elements are tight winded by high-velocity winders and canned in aluminum cases. refined castor oil is adopted as impregnation agent treated in vacuum and high temperature condition. those make a more reliable performance and longer lifespan for a capacitor. meanwhile the second generation of mechanical anti-explosion design is selected as blast-proof secure measure for our capacitors. the reliability is more affirmatively enhanced.