关于危险品什么物质的？

客户发来一个网址，可能是要说我们产品是否含有以下物质的，请大仙看下这个都是什么意思？ Candidate List of Substances of Very High Concern for Authorisation??这个是什么翻译呢？ Substance Name / EC Number??/CAS Number??/Date of inclusion??/Reason for inclusion??/Decision number??/IUCLID 5 /Substance Dataset? ???这个是什么意思 Please note; We cannot and will not purchase any products that he come into contact with any of the chemicals listed on the Candidate List of Substances of Very High Concern for Authorisation - ECHA Hexahydromethylphthalic anhydride [1], Hexahydro-4-methylphthalic anhydride [2], Hexahydro-1-methylphthalic anhydride [3], Hexahydro-3-methylphthalic anhydride [4] [The individual isomers [2], [3] and [4] (including their cis- and trans- stereo isomeric forms) and all possible combinations of the isomers [1] are covered by this entry] 请大仙帮我看下呢~~~