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Organochlorine Pesticides Mixture #3 - 508.1 500ug/ml in Ethyl acetate
头孢哌酮二水合物
腐霉利农药纯度标准物质
丁硫克百威
(办证)杀螟硫磷D6
ααα (20R 24R)-24-Methylcholestane and ααα (24R 24R)-24-Ethylcholestane
苯噻酰草胺 标准品
喹噁啉-2-羧酸溶液,100ppm
High Alloy (Ni-Hard, Type IV)
o,p'-DDD