It is still very useful to study photovoltaic equipment for remote areas now, such as the most common photovoltaic LED lamps in the future, which is a very good product. For remote areas, it is very useful to have such a lamp, of course, it is impossible to popularize it in a short time, and the price of industrial products in this era is too high.

Of course, the most important thing is military use, for many posts, it is impossible to have electricity at all, with solar photovoltaic equipment, it can be given

Chapter 436 of "The Capital of the Courtyard is Black Technology" The house is being beaten by hand, please wait a while,

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