Tungsten alloy blocks are functional materials made by using tungsten as the base material, with the addition of metals such as nickel, iron, copper, or cobalt, processed through powder metallurgy techniques (including mixing, pressing, and sintering) into solid blocks. They are widely used across industrial, medical, and research fields.

Beyond being a key raw material for transparent heat-insulating coatings, films, or glass, cesium tungsten bronze also serves as an important production material for heat-storage fibers, significantly enhancing the comprehensive performance of functional fibers.

In modern society, radiation is nearly ubiquitous, emanating from hospital radiotherapy equipment, nuclear power plant operations, radioactive experiments in research institutions, and detection instruments in industrial production—all posing potential harm to human health and the environment. Prolonged exposure to excessive radiation can damage human cells and trigger various diseases. As a result, radiation protection has become a critical concern across multiple fields. Among the various radiation protection methods, tungsten alloy shielding cans have emerged as a "star product" due to their exceptional performance, providing a robust "protective shield" for society.

As one of the most typical functional fibers, heat-storage fibers can have an appropriate amount of nano cesium tungsten oxide powder added during production as a modifier to further enhance their heat-storage capabilities.