In electronics, a wafer or substrate is a thin slice of a semiconductor such as silicon that is used in the manufacture of electronic chips and solar cells. These wafers are used as a substrate in electronic microdevices. Microdevices are manufactured in and on wafers, and many infrastructure processes such as doping, ion implantation, optical patterning, etc. are performed on them. The wafers are cut and the chips on them are separated by a slicing process. The company Rasa intends to sell 700 of its surplus silicon wafers (4-inch codes 2100003 and 2100002) and quartz (1-inch code 2100015) (with specifications in the table below) all at once. Those interested in purchasing can call 64545463 or 66489300 from Saturday to Thursday during office hours (8:00 AM to 4:00 PM). The amounts do not include VAT and prices will change with changes in exchange rates.