如果企业客服不在线,也可拨打400电话联系。或者发布求购信息
2,2',3,5',6-Pentachlorobiphenyl (无证书)
溴代环己烷溶液, 1000ppm
n-Heptane-d16 标准品
5α(H)-Cholestan-3?-ol
Stainless Steel 23Cr-7Ni
2,5-Dimethylpyrazine, Flavour grade
2,3’,4,5,5’-五氯联苯溶液,100ppm
First Standard® 甲醇中杀虫丹砜溶液,100μg/mL
甲醇中磺胺间二甲氧嘧啶-D6溶液标准物质 农科院质标所
2,4-滴滴涕 Bepure-GBW(E)082909