Ningbo Changhong Polymer Scientific and Technical Inc.

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Changhong SBS Waterproof Bitumen Rolls Raw Material	Styrene Butadiene Styrene Copolymer Asphalt Modifier Material Pellet	SBS Bitumen Roll Waterproofing Materials Powder	Styrene Butadiene Styrene SBS Modifier Elastomer Pellets
Styrene Butadiene Copolymer SBS Polymer Modified Asphalt Thermoplastic Elastomer Granules