The African Development Bank will finance $25 billion by 2025 to support Africa's fight against climate change, the bank's president said at the bank's annual meeting in Accra, Ghana. He noted that climate change has had many negative impacts on the…
Amorphous boron powder is a black or dark brown powder and is an important energy material. Amorphous boron powder is widely used in metallurgy, electronics, medicine, ceramics, nuclear industry, chemical industry and other fields.…
Boron powder is black or dark brown powder, which can react with fluorine at room temperature and is not corroded by hydrochloric acid and hydrofluoric acid aqueous solutions. Boron powder is insoluble in water, soluble in boiling nitric acid and sul…