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1,2:3,4-Diepoxybutane

Dibenz[a,j]acridine

A16972985AL-100

Spirotetramat 100 µg/mL in Acetonitrile

3-(Trifluoromethyl)pyrazole-5-carboxylic Acid

pH 7 水质标样(数值见批号) 20ml

4-Bromonaphthalen-1-ol

VOC halogenated hydrocarbons Mixture for HJ 645-2013 500 µg/mL in Methanol

Mesoporous silica SBA-16, diam:＞1000 nm,SSA:600-960 m2/g,pore size:5-12 nm,pore volume:0.50-0.95cm3/g

5μm ID4.6mm*10mm

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