It was tested that same two cakes, one was shined by the UV flashlight while the other wasn’t. Put these two cakes on the same desk, the one without shined by the UV flashlight go moldy with green paint on after a week, while the other go moldy after three weeks. It is clear that the ultraviolet radiation of the UV flashlight is good for food preservation. It is convenient to shine with the ultraviolet ray of the UV flashlight in the last food production line.

We all know the fruit, vegetable and egg are hard to store for a long time in summer, the bacteria on the surface of the egg are polluted during transportation and storage in the summer, the pollution will make the egg go bad which would cause a great loss. Eggs shined by the short wave ultraviolet ray of the UV flashlight before packing could be stored longer.There are other uv flashlight uses,that can detect the jade,anate,amber and detect the leak of oil and gas,etc

Wash the cucumber, tomato, fruit in the summer with water and shine with the ultraviolet ray would stop the disease into mouth.