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Concrete Additive Sodium Naphthalene Sulphonate Formaldehyde Used as Water Reducer, Find Details and Price about Sodium Naphthalene Sulphonate Formaldehyde pH Value 7-9 Water Reducer from Concrete Additive Sodium Naphthalene Sulphonate Formaldehyde Used as Water Reducer - Shandong Jufu Chemical Technology Co., Ltd.