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N,N'-Di(tert-butyl)urea

Chloroethane in Methanol

n-Tricosane in Isooctane

BePure-31760Y2M-a

22种有机挥发物 VOC Mix-22（苯甲醛-乳酸乙酯） 2000ug/ml in Methanol

水中氯酸盐标样（浓度见批号）

BePure-31047Y2M

2种替代物混标HJ642 Mix-2 2000ug/ml in Methanol

2-(2-((6-(2-Cyanophenoxy)pyrimidin-4-yl)oxy)phenyl)-2,2-dimethoxyacetic Acid Methyl Ester-d4

5μm ID4.6mm*250mm

5μm ID4.6mm*10mm 4支/包

5μm ID4.6mm*10mm 4支/包

5μm ID4.6mm*250mm

Laurophenone (Phenyl-Undecylketon)

Thiodicarb 100 µg/mL in Acetonitrile

5μm ID4.6mm*10mm

5μm ID4.6mm*10mm

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