We are Tianjin Leading Import based in Tianjin, China. We are member of TradeKey.com since June, 2015. Our business is related to Chemicals industry and we specifically deal in Dys,pigment,optical brighener. Please find our product details below:

sulphur dyes black BR
Bright-black flake or grain, insoluble in water and alcohol. It is the green-black colour when it soluble in solution of sodium sulfide.

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