FR4 double-sided circuit board recently quoted

The inventor of the printed circuit board was Austrian Paul Eisler, who in 1936 used a printed circuit board in a radio set. In 1943, Americans used the technology heavily in military radios. In 1948, the United States formally recognized this invention for commercial use. Since the mid-1950s, printed circuit board technology has only been widely adopted.

Prior to the advent of printed circuit boards, the interconnection between electronic components was achieved by direct connection of wires. Nowadays, circuit breadboards exist only as effective experimental tools; printed circuit boards have occupied an absolute dominant position in the electronics industry.

The recent double-sided circuit board for FR4 material in Shenzhen is quoted at RMB 450.00 per square meter.