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連絡先担当者 Mr. lanxi
Chongqing, Tianjin, Tianjin
Clour index No ***** Black(****5) Appearance Flashing black flakes or granules Shade Near to the standard Strength(with standard) **0+/*3 of the standard Alkali insolubles 0.7%max Moisture 6.0%max Insoluble matter in sodium sulfide 0.5%max