Sodium metatungstate is a highly water-soluble, high-density, non-toxic, and environmentally friendly tungstate product that can completely replace traditional toxic heavy liquids. It is an ideal choice for laboratory mineral separation and density gradient centrifugation. It is widely used in scientific research fields such as geology, marine biology, and soil science. It is also an indispensable fine chemical raw material in catalysts, nanomaterials, electrode materials, electron microscope sample preparation, oil drilling fluid weighting agents, dye and pigment industries, and pharmaceutical synthesis.