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In 1890, the brilliant inventor Nikola Tesla proposed the idea of achieving global wireless power transmission through the Earth's ionosphere. Over a hundred years have passed, yet no groundbreaking or large-scale progress has been made. Among the commonly used wireless power transmission technologies, ...

1) Current Market Situation: The current market offers two types of LED display boards: those powered by AC electricity and those using rechargeable batteries. These display boards are less than 10mm thick and can be customized to sizes ranging from A4 to A0, or other special dimensions. They are mainly ...