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BT-19920(磁力加热搅拌器/IKA/RCT/digital)
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Styrene, 苯乙烯/500ml/CAS:100-42-5
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2-Bromopyridine, 2-溴吡碇/500g/CAS:109-04-6
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Diethyl azodicarboxylate, 偶氮二甲酸二乙酯/25g/CAS:1972-28-7
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