An elastic crawler having a crawler body formed of a rubber elastic material into an endless belt so that rollers rotatively move on right and left side regions in an inner surface of the crawler body is provided with a reinforcement rising in a thickness direction of the crawler body in an area on an outer peripheral surface of the crawler body corresponding to right and left ends of the roller.

 
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> Deproteinized natural rubber latex, method of preparing the same, rubber product using the same, and proteolytic agent for deproteinized natural rubber latex

> Multinuclear transition metal catalysts for preparation of multimodal polymer compositions

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