Like tungsten bars, tungsten sheet is a typical product of the transition metal tungsten, sharing highly similar thermal, mechanical, chemical, and electrical properties, and is widely used in industries such as machinery and semiconductors.

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.

As a typical tungstic acid, yellow tungstic acid generally refers to a transition metal compound with a 1:1 ratio of tungsten trioxide (WO₃) to water (H₂O). It consists of one tungsten atom, two hydrogen atoms, and four oxygen atoms, forming a pale yellow crystal or powder. It is a hydrated tungsten oxide, with the English name Yellow Tungstic Acid, a molecular formula of H₂WO₄ or WO₃·H₂O, and a molecular weight of 249.86.

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.