Solar energyMr. Thawatchai Chuangwilai (2547 (2004): website Study on the repellent), the solar energy that we humans know the Sun and take advantage of the Sun since late da ban, starting from the use of project life in a couple days. Starting to use the light from the Sun. Hang clothes, food preservation by dried, etc. There are currently using technology for the blind using solar energy to achieve maximum benefits.
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