巴斯夫聚对苯二甲酸丁二醇酯（巴斯夫PBT株式会社）
basf供应PBT德国巴斯夫B2550FC

basf供应PBT德国巴斯夫B4300G4 BK5110

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basf供应PBT德国巴斯夫B4300G4 High Speed

basf供应PBT德国巴斯夫B4300G4LS

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basf供应PBT德国巴斯夫B2520