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Aroclor 1260 in Transformer Oil
二嗪农-D10(二乙基-D10)
大米粉中的4,4'-滴滴滴质控样
Leuco Gentian Violet-d6,
氯硝胺溶液,100ppm
GBW06416 抗氧剂425
磺胺塞唑-d4
Fluazifop-methyl(有证书)
2.2'.3.3'.4.5-Hexachlorobiphenyl Solution 100ug/ml in Hexane (无证书)
4.4'-Diaminodiphenylaminesulfate (无证书)