Zhengzhou Welcom Tech. Co., Ltd
Polyacrylamide
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Sodium Formate
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MALEIC ANHYDRIDE
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Potassium sorbate
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Maleic Anhydride
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Paraformaldehyde
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Trisodium Phosphate
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Sodium Acetate
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Potassium Carbonate
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Phthalic anhydride
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