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Melamine water reducing agent is the product of the reaction that melamine is first sulfonated by sulfuric acid and then condensed with formaldehyde, so the chemical name is sulfonated melamine-formaldehyde resin, which belongs to the anionic surfact…
The roble had hit a record low after the West imposed sweeping sanctions on Russia for its aggression in Ukraine. Russia's president recently ordered exports of Russian gas to "unfriendly" countries to be settled in robles. The speaker of Russia's up…
Due to the properties of the chemical bonds between carbon atoms, graphene is very tough: it can be bent to large angles without breaking and withstand high pressures.…
The backfilling of the bathroom is a crucial part of any renovation. Backfilling is an essential part of bathroom renovations. It can be used to stop leakage and protect the pipe, as well as improve the thermal insulation. In selecting bathroom mater…