blue 77
blue 77

blue 77

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A kind of synthetic method of EX-SF DISPERSE BLUE EX-SF 300 77. Technical field. The present invention relates to the synthesis technique of the higher blue dyes of a kind of firmness, specifically, is the synthetic method disclosing a kind of EX-SF DISPERSE BLUE EX-SF 300 77. Background technology. hobi slot 77

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