Appearance:Tungstic Acid is yellow,with color uniform.Products do not have impurities which are not visible to the naked eye.

Physical Properties:Products used the classical method of precipitation and smelting.After decades of process improvement,the process has a quality at an advanced international level,which involves the following advantages:good results in removing impurities,process stability and strict control,high purity.The characteristics of tungstic acid products after being heated and dried out:the carbide products,with characteristics of grain products small,uniform size,hardness,

high strength,are made by tungsten carbide powder into which the products are transformed.The characteristics of tungstic acid products after being dried out in low-temperature steam are:non-free state tungsten trioxide,being completely dissolved in hydrogen peroxide or ammonia.