Hollow glass balls are hollow spherical powdered inorganic nonmetallic materials. Their particle size is 5-100mm with a thickness of 1-2mm. The compressive strength is 3-125MPa. The following is a list of the most recent articles about Hollow Gl…
What is gallium-nitride? Gallium nitride (chemical formula GaN) is a combination of nitrogen and galium. This compound makes a semiconductor with an energy gap. This compound has been used since 1990 in LEDs. It is similar in structure to wurtzite, a…
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…
CNBC Jim Cramer said Tuesday rise in oil prices poses a challenge for the Fed chairman ahead of Wednesday meeting. Cramer said on "Mad Money" that "crude oil prices have soared... It makes life difficult for Fed Chairman Colin Powell.&...…