Chemical formula: S. Black-gray non-metallic. It dissolves in concentrated sulfuric or chloroform. Purity>99% Sizes of the particles are 200, 100, or 325 mesh. HTML3_ HTML3_ The chemical formula can be used to describe HTML3_ HTML3_ . Selenium metall…
What exactly is Silica Aerogel? A silica aerogel is a kind of porous material. They are created through the replacement of a liquid component by gas inside a gel. The result is a solid that has very low density and thermal conductivity. Aerogels have…
Before construction, ensure that all kinds of instruments used during construction can operate normally, check their status and break the work, and the materials must be in place.…
A lead-acid battery (VRLA) is a battery whose electrodes are mainly made of lead and oxides, and the electrolyte is a sulfuric acid solution.…