Simple Identification Method For Vacuum Insulation Performance

- Dec 11, 2019-

Simple identification method for vacuum insulation performance: pour boiling water into a vacuum cup, tighten the bottle stopper or lid clockwise for 2-3 minutes and then touch the surface of the cup body with your hand. If the cup body is obviously warm and hot, it means that the product has lost the vacuum degree and cannot achieve good insulation effect.