The demand for diving flashlight:

The diving flashlight is an underwater light. Because of the special nature of the underwater environment, the diving flashlight can be said to be another "eye" of the diver. The diving flashlight can help illuminate the underwater world, allowing the diver to better see the underwater environment. Because the underwater light is dim, to see the underwater environment, a waterproof flashlight has become an urgent need. Therefore, the market demand for diving flashlights is still very large. However, different diving levels have different requirements for diving flashlights. Freshwater diving requires a weaker shell for diving flashlights because of the low corrosive nature of fresh water. However, the salt water is very corrosive. Therefore, the diving flashlight designed for salt water should have strong corrosion resistance.