vacuum glass is developed on the basis of vacuum dewar (vacuum flask) principle. The vacuum layer blocks conduction and convection, and has the functions of heat preservation, preventing condensation and frosting, and sound insulation. Vacuum glass is an energy-saving, high-tech, green glass product, and its production technology involves vacuum technology, material science, machinery and automation technology, precision measurement technology and other scientific and technological fields. It can be widely used in buildings, doors and windows of vehicles and ships, heat preservation cabinets (such as display cabinets and refrigerated cabinets) and other fields that need transparent heat insulation materials.