Why do we need to buy sunglasses? Is part of history In 41 years to see the United States the first total solar energy production! Now grab your hand and prepare to witness this miracle on August 21! Saftey prompts to use glasses： 1.Do not use ordinary sunglasses no matter how dark the tint! 2.Do not use Solar Eclipse Glasses that have been scratched or damaged! 3.Do not use glasses for more than 3 minutes of pretending, so you can get your eyes to recover time. 4.Keep your eyes in a dry environment and make sure you can safely view the sun on August 21, 2017.
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