Superior suspension, anti-settling capacity casting coating aluminum magnesium silicate thixotropic thickener suspension containing solid particles to create a suspension system excellent suspension and anti-settling effect, making the system a homogeneous, stable, there are no points layer analysis of water phenomenon. Associative network structure of the product in aqueous systems and adequate surfactant is added to form a solvent-based system with superior restraint and isolation of solids, can cast paint aggregate powder such as quartz powder, zircon powder, bauxite powder, corundum powder, chromite powder, magnesia powder, graphite powder uniformly suspended, dispersed throughout the system, and gives the system excellent viscosity and yield value to prevent these aggregate powder produced settling under gravity, casting coating gives the ideal suspension rate. Excellent thixotropic casting coating aluminum magnesium silicate suspension thixotropic thickener has excellent low high shear viscosity, thixotropic properties of high viscosity at low shear, after adding the product in casting coating system enables viscosity That is the case of cut smaller, stop and then resume its original shear viscosity, gives excellent thixotropic casting coatings, leveling, permeability, coating properties, can coatings are widely adapted to brushing, spraying, dipping , flow coating, such as different use of technology. Significant synergistic thickening effect in some systems require the use of organic thickeners, the organic thickeners and thixotropic magnesium aluminum suspension with the use of thickeners will produce significant synergistic thickening effect leaving a substantial increase in viscosity is much higher than the viscosity of both when used alone. This synergistic thickening effect coating systems which can effectively reduce the amount of organic thickeners, and reduce the overall cost of paint.