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2,3,3',4',5,5',6-Heptachlorobiphenyl Solution 100ug/ml in Hexane (无证书)
3-Nitroperylene
吡嘧磺隆农药纯度标准物质
Diniconazole
4-氯苯酚
甲醇中顺一1,2—二氯乙烯溶液标准物质
Air Trace Metals/Impinger Soln 质控样
精磺胺 BePure-23492XM
2.2'.4.4'.6-Pentachlorobiphenyl (无证书)
Friedelan-3?-ol