Pop-ring type caps
Pop-ring is anti-forging with remarkable sign. When opening a cap, its pop ring breaks and cap divides to two parts.
Twist-off type caps
Having two types as twist-off ring and twist-off teeth. After opening a cap, its twist-off ring or twist-off teeth breaks.
Central-ejecting type caps
Gently turning cap, the anti-forging sign at top can be ejected out.