Ammonium paratungstate (APT), is an important starting material in tungsten industry. Through reduction of APT, produces most of the tungsten products, including tungsten trioxide, tungsten bronze, etc.

It seems that there is no correction between tungsten heater and alcohol bottle, however, they are related together by the vacuum coating furnace, which can make the bottles with colorful surface.

Tungsten alloy application in military industry is mainly for aerospace, weapon and nuclear industry. Tungsten alloy (WHA) is heavy metal with main content of tungsten 90~97%, and other elements, such as copper, nickel, iron, manganese, and molybdenum.

Ammonium paratungstate (APT) is common starting material in the synthesis of tungsten products. Thermal decomposition of ammonium paratungstate (APT) in air leads to production of tungsten trioxide (WO₃) which can be used as a catalyst. WO₃ is also a common precursor material for manufacture of tungsten metal powder, which has been applied in the fields of lightings, electronics, and high-temperature resistant material.