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The choice of antioxidant is crucial and can depend on several factors, including the type of plastic material, processing conditions, and the intended application. For instance, polyolefins, which are commonly used in various applications, often benefit from hindered phenolic antioxidants due to their thermal stability and compatibility with the substrate. Meanwhile, engineering plastics like polycarbonate may require different types of antioxidants that can provide protection at elevated temperatures.
antioxidant additives for plastics

The United States, while not leading in the overall production volume, remains a critical player in high-value APIs, particularly those that involve complex synthesis or advanced biotechnological processes. The U.S. regulatory environment, spearheaded by the Food and Drug Administration (FDA), imposes stringent guidelines on manufacturing practices. As a result, U.S.-produced APIs often carry premium pricing, reflecting their quality and reliability. The U.S. also invests heavily in research and innovation, focusing on the development of novel drugs and advanced therapeutics, which further drives API innovation.
active pharmaceutical ingredient production by country
