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Much of the luminous powder is a kind of special crystal structure and luminescent material, it has light - light storage luminous - strong ability, when exposed to natural light and light, which is part of the light energy absorbed and stored in the dark, and then slowly release in the form of visible light. After the light emitting material. After 5-20 minutes, can automatically emit light for more than 12 hours in the dark. The process of absorbing light and emitting light can be repeated many times, the luminous life of more than 20 years. |
