A semiconductor laser

A semiconductor laser is also called a laser diode (LD). In the 1980s, people absorbed the latest developments in semiconductor physics, using novel structures such as quantum wells (QW) and strained

Daily maintenance of food machinery and equipment

During the use of food machinery equipment, as the running time increases, due to various factors such as corrosion and wear, such failures may occur, and maintenance work of the equipment is very important.
Before using foo