Aluminum oxide (Al2O3), also known as alumina, corundum, sapphire, or ruby, is one of the best insulators used in a wide range of applications: in electronic components, as a support material for ...
JAKARTA, Sept. 24 (Xinhua) -- Indonesian President Joko Widodo inaugurated the completion of the phase 1 construction of the alumina refinery smelter in a 500-hectare integrated area in Mempawah ...