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Millions of old people in the world suffer from Alzheimer's disease. Many scientists have found that Alzheimer's disease is closely related to aluminum.
Aluminum exists in various rocks or ores in the form of compound, such as feldspar, mica, kaolinite, bauxite, alum, etc.
Aluminum is a chemical element. Its chemical symbol is al, and its atomic number is 13. Aluminum is the most abundant metal element in the crust, ranking third only to oxygen and silicon.
Cast iron still occupies a place in automotive materials because of its many advantages in performance and cost. The progress of cast iron material makes its application in automobile appear new bright spots.
