Moreover, some azo dyestuff wastewater also bears chromium compounds.
同时，一些偶氮染料废水中也存在铬离子。
The present invention relates to new compounds, which are molecular combinations of a phthalocyanine and a mono-azo dyestuff linked via specific linking groups and to a process for their preparation.
本发明涉及新型化合物及其制备方法，这些化合物为经由特定连接基团连接的酞菁和单偶氮染料的分子组合。
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