2. Process guarantee: The production processes of red bile and white bile are strictly controlled and tested to ensure that the products will not produce harmful substances during use, thus ensuring human health.
3. Red glass is a special glass product, which comes from the vacuum layer with copper plating inside. This copper-plated layer is called red glass, which is mainly used as the inner container of thermos bottles. Its thermal insulation principle is to create a vacuum environment between double-layer glass, thus effectively reducing the convection, conduction and radiation of heat, thus achieving the effect of thermal insulation.