Zinc sulfide, chemical formula ZnS, is an inorganic compound composed of zinc and sulfur elements in a ratio of 1:1. Its crystal structure is mainly sphalerite type, with high melting point, hardness, resistivity and other characteristics. As a compo…
The Sodium salt of Polynaphthalene sulphonic acid has excellent colloidal properties. It does not have any surface activity like penetrating foaming and is attracted to polyamide and proteins, but not cotton, hemp or other fibers. About the Sodium…
The COVID-19 pandemic has pushed tens of thousands of people out of the workforce, which also has a certain impact on the bhutan best places to visit On Monday (local time), the Nat…