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trans-Nonachlor
模拟天然水F-溶液成分分析标准物质
二氯丙基-2-丁基乙基酯
First Standard® 虫酰肼
蚜灭磷/蚜灭多
1-Acetyl-4-(3-Trifluoromethylbenzoyl)-piperidine
PUNYW25526566 Eldecalcitol Impurity 1
Beam (TM) Solution 100ug/ml in Acetonitrile
2,8-Dibromodibenzothiophene
2-Ethylhexyl diphenyl phosphate
12种农药混标(GB 23200.8-2016 GC组B)