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BG-C334400(具夹层蛇形冷凝器/冷凝管/冷凝部分长400mm/磨口24/40)'); document.write('¥300.8
BG-S244504(溶剂蒸馏头/主磨口24/40/下端侧口为磨口14/20/500mL)'); document.write('¥541.6