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Tangshan Huayi IndustryHoldings Co.,Ltd.
Tangshan Huayi IndustryHoldings Co.,Ltd.
Main Products:
Phthalic Anhydride / J Acid / 2-Naphthol / 3-Hydroxy-2-Naphthoic Acid / Maleic Anhydride / 2-Aminonaphthalene-1-Sulfonic Acid / Alpha Naphthol