4A zeolite is Na2O.Al2O3.2SiO2.4.5H2O,Which is the white powder, without poison and harm to our circumstance.It has active Ca-exchange ability.It can exchange Ca+in water,then the water `s rigidity will be decreased.Thereby it will be the action of washing.It can unite with all kinds of activators, for example(LAS),(AE),(AOS).It will be the best action with AOS.
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