1. Combining the coagulatory advanges of Aluminium salt and Iron salt, and being able to rapidly form flocculation with more imporosity and rapid sedimentation;

2. Suited to raw water at various temperatures and having superious solubility;

3. Less dosage than other Aluminium salt water treatment chemicals and having lower cost.

It is an idea chemical reagent for the treatment of seriously polluted raw water, low temperature and high turbidity water.