Electronic products are related products based on electric energy, including: watches, smart phones, telephones, televisions, DVD players (VCD, SVCD, DVD), video recorders, camcorders, radios, tape recorders, combination speakers, laser players (CD), computers, mobile communication products, etc. Because the early products were mainly based on electronic tubes, the original electronic products.

The convergence of information, communication and entertainment has brought the whole world into a new era of consumer electronics. The market has grown rapidly over the past three years. Devices such as smartphones and tablets have changed the way end users behave in their daily lives and the consumption of services.

With the advancement of technology, electronic products are gradually becoming popular in our daily lives, especially electronic products such as mobile phones are inseparable from our lives.

In the design of the circuit board, potentiometers, adjustable capacitors, pushbutton switches, adjustable inductors, etc. are often applied. These devices may need to be adjusted after designing the entire circuit board.