The injection moulding processing methods for plastic products for household appliances mainly include injection moulding, extrusion moulding, thermoforming, hollow moulding, lamination moulding, compression moulding, transfer moulding, foam moulding, casting moulding, inlay moulding, encapsulation, etc., among which mainly is injection moulding. In recent years, some new plastic processing technologies and new equipment have been widely used in the plastic moulding of household appliances, such as precision injection moulding, rapid prototyping technology, melt injection moulding technology, gas-assisted/water-assisted injection moulding technology, electromagnetic dynamic injection moulding technology and coating membrane injection moulding technology.