Characteristics: Waterborne aluminium paste,developed with the growth of Water-based coatings.As the metal aluminum is amphoteric active metal elements, which is easy to react with water, acid and alkali, it should take special surface treatment when add in aqueous resin system. It disperses well in the solvent of water and alcohol with good acid and alkali resistance ability. Currently in the market,the way of making aqueous aluminium paste can be divided into 3 methods: 1.Chromic acid, phosphoric acid, modified resin and salt passivation method; 2.Silica coating method; 3.Inorganic&organic double layer coating or hybrid coating method. Different methods have different advantages and disadvantages and they all occupy a certain share in the market. Along with the progress of society and the requirements for environmental protection and characteristics of product, the last two methods take great advantage in the market.