With the improvement of living standards, well-being performance becomes more and more important. In daily life, with the expansion and diversification of the use of radio waves such as smart phones, mobile phones, wireless local area networks, wireless and IC tags, we worry that radio waves can be harmless to our health, so we question the safety of radio waves . There is one person. Devices such as cell phone jammers are commonly used in many centers.
Many educators struggle to figure out how to use electronic devices in the classroom. Some educators are concerned about the negative effects and encourage them to apply the standard. Others even highlighted the possible usefulness of mobile devices in the classroom. The director ordered the Chinese equipment online, but some resentful gentlemen quickly discovered it and informed him that it was legal. This idea is very important.