ChemicalBook
Chemicalbook is a platform dedicated to provide the most valuable resources for chemical industry users. Here you can get chemical information (such as chemical physical properties, safety data, Excellent china suppliers and their web addresses and etc.)by searching the name, CAS number, molecular formula, molecular weight, MDL number, EINECS number, structure.



医生专业,内容可靠,态度很好
挺全的,一些专业的知识编辑得不错 [g=OK]
好医生,绝对好评.建议很实用
可靠,正规,支持一下