returned in case there is no argument or the argument is not a valid 32-bit
"From there, we began exploring ways to improve their properties by introducing natural and abundant components such as starch, and also a biodegradable polymer with remarkable mechanical features. This also opened the opportunity to integrate nanoclays, like bentonite, which can enhance the film's strength and barrier performance.
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受伊朗局势持续升级影响，3月2日国内期货市场反应剧烈。截至当日收盘，集运指数（欧线）、原油、高硫燃料油、低硫燃料油、甲醇、液化气、丙烯、聚丙烯、乙二醇、纯苯等12个品种涨停。此外，黄金、白银等品种也出现大涨。
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