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matyè premyè kawotchou: kawotchou natirèl, kawotchou sentetik, materyèl skelèt, elastomèr plastik, kawotchou resikle, ak poud kawotchou, melanje kawotchou, elatriye.
eng
rubber raw materials: natural rubber, synthetic rubber, skeleton material, thermoplastic elastomer, recycled rubber, and rubber powder, mixing rubber, etc.