The control board for small household appliances is also a circuit board. Although its application scope is not as wide as that of circuit boards, it is more intelligent and automatic than ordinary circuit boards. To put it simply, a circuit board that can play a controlling role can be called a control board. The control board is one of the core components of all kinds of household appliances. Most of the specific program functions are to be realized by this component. In a sense, the quality and life of the home appliances are determined by the quality and life of the control board, and the quality control of the control board is the basis of the survival and development of the large control board enterprises. Choosing a high quality control board is the key to enhance product quality and enhance market competitiveness.