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Pyridine hydrobromide, 吡碇溴化氢盐/500g/CAS:18820-82-1
'); document.write('¥530

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BG-L100250-Z(容量瓶/出口级/玻璃带塞/棕色/250mL)
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BG-F909500H(史莱克反应茄瓶/500mL/磨口19/22/高真空阀门)
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