Yellow tungsten oxide, with the chemical formula WO₃, is an important member of the tungsten oxide family, appearing as yellow or yellow-green powdered crystals. Its color variation is closely related to its crystal size: it exhibits a bright yellow color when the crystal size is approximately 1.5 micrometers and shifts to green when the crystal size increases to 15 micrometers. Despite the difference in appearance color, its basic characteristics remain consistent.

Among the myriad of metal materials, tungsten bars may not be well-known to the general public, yet they are indispensable “behind-the-scenes heroes” of modern industry. From the filaments that illuminate the night to spacecraft shuttling through space, and to medical equipment safeguarding health, tungsten rods, with their exceptional properties, silently support the development of modern technology.

Tungsten rods, with their exceptional properties such as low thermal expansion, outstanding thermal conductivity, superior electrical resistivity, and high elastic modulus, have emerged as the ideal material choice for numerous high-tech equipment and industrial applications.

Tungsten oxide, this seemingly ordinary inorganic compound, plays an indispensable role in modern industrial and technological development due to its unique physicochemical properties. From traditional metallurgical industries to emerging high-tech fields, tungsten oxide demonstrates strong adaptability and unlimited potential through its diverse forms and wide range of applications, becoming an important material for driving modern industrial progress and technological innovation.