Like tungsten monoboride (BW), ditungsten boride (BW₂), tungsten diboride (WB₂), and ditungsten pentaboride (W₂B₅), tungsten tetraboride (WB₄) is an inorganic compound composed of the transition metal tungsten (W) and the non-metal boron (B). It exhibits excellent mechanical and electrical properties, making it valuable for applications in machining and electrode preparation under extreme conditions. Due to varying ratios of tungsten to boron atoms, different tungsten borides have distinct physicochemical properties, production methods, and applications. Below is an overview of WB₄'s basic information.

Solar simulators are critical equipment for the research, development, and quality testing of photovoltaic devices. Their primary function is to accurately replicate the spectral distribution, irradiance intensity, and spatial uniformity of sunlight. As a key component of the simulator's light source system, barium tungsten electrodes play an irreplaceable role in enhancing light source performance and ensuring testing accuracy.

As an important compound of the rare metal molybdenum, molybdic acid is a colorless triclinic or yellow monoclinic solid powder formed by combining molybdenum trioxide (MoO₃) and water in a specific ratio. It is a hydrated molybdenum oxide composed of hydrogen ions (H⁺), hydroxide ions (OH⁻), and molybdate ions ((MoO₄)²⁻). Its English name is Molybdic Acid, with a molecular formula typically of MoO₃·2H₂O, a molecular weight of 179.97, and a CAS registry number of 7782-91-4.

Surgical shadowless lamps are critical devices used in operating rooms to illuminate surgical sites. Their core function is to project light onto the surgical area at specific angles through the reflection and refraction of multiple light sources, preventing shadows caused by the surgeon's head or instruments and providing a clear, uniform surgical field of view. Key requirements for these lamps include high brightness, low heat output, precise color temperature control, and long service life to meet the stringent lighting demands of complex surgical procedures.