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A0303106 精喹禾灵乙酯 CAS号94-52-0
16种农残混标 BePure-33423CT-b
培氟沙星-d3 RMCP16006-5mg
3,4-二氯甲苯
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Neodymium - 4% HNO3(有证书)
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3-Pyrazolidinone hydrachloride (无证书)
Volatile Organics High Concentration Mixture #6 2000ug/ml in Methanol
2.3-Dichlorobiphenyl Solution 100ug/ml in Isooctane (无证书)