英文名称: | Ployvinyl butyral | Polyvinyl butyral resin | Vinyl acetal polymers, butyrals | poly(2-propyl-m-dioxane-4,6-diylene) | butvar | polyvinyl butyral resins | polyvinylbutyral | poly(vinyl butyral) | Vinyl acetal polymers,butyrals | polybutyral | PVB(polyvinylbutyral) | polyvinyl butyral |
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