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…
4A Molecular sieve is NaA molecularsieve, which is the hydrate crystalline silicon alluminate and salt. The characteristics of 4A molecular Sieve Powder include stable quality and moderate particle size. They are made up of formed products. 4. A Mo…
Colorectal cancer is a common malignant tumor of the digestive tract. Its incidence rate mortality rate are high. It is the fourth leading cause of death related to cancer. Kdsps The growth of colorectal cancer is relatively slow the early d…
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…