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硫双灭多威 标准品
N-Benzoylcarbonylaminoacetamidine Hydrochloride
氯氰碘柳胺
苄基西布曲明溶液, 100 ppm
3-Chloro-2-methylpropene
定制农药混标(13组份) 标准品
水质标样-硫化物
p-n-Nonylphenol (13C6) Solution 100ug/ml in n-Nonane
Benfluralin(有证书)
Clofentezine Solution 100ug/ml in Methanol