lamps

Two giant giant trees, identical, with a height of 1.5m and weighing dozens of kilograms have been discovered at a temple in Nga Son district, Thanh Hoa province.

In the 21st century, mankind witnessed the rapid development of information technology, smart phones, 3D printers ... But there are still 1.5 billion people globally do not have

Delft Technical University Netherlands is testing a smart street lighting system on campus, using less than 80% of the electricity that the system currently consumes and is also