Segmentation by Types disaggregates metal additives into functional families, each with sub‑categories that align with specific performance objectives. Flame‑retardant additives, chiefly antimony trioxide and zinc borate, dominate the portfolio, delivering char formation and heat‑sink effects essential for automotive and packaging compliance. UV‑stabilizing agents, such as titanium dioxide and zinc oxide, mitigate photodegradation in outdoor‑exposed consumer goods and electrical housings. Antimicrobial compounds, including copper‑based and silver‑doped oxides, are increasingly integrated into medical‑grade plastics and high‑touch consumer items to inhibit microbial growth. Conductivity enhancers, primarily magnesium hydroxide and nickel‑based fillers, enable static dissipation and electromagnetic interference shielding in electronics. The relative market contribution of each type reflects the prevalence of its target application: flame‑retardants capture the bulk of revenue, followed by UV stabilizers, antimicrobial agents, and conductivity enhancers, together forming the comprehensive market taxonomy for metal additives in plastics.