With traditional naphthalene department pumping agent, copolymerization carboxylic acid compared with efficient pumping agent low content (by 20% plan: concentration of mixed 0.8% ～120 %), decrease water higher rates (up to 25% ～40%), collapsbillity and low losses, with large dosage of mineral powder and fly ash good adaptability to wait for an advantage, but its surface active role, shrink and xu decrescent, product production no formaldehyde content, chloride ion content and alkali content of all low, nor sodium salt;

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