| Professional technicians will determine whether there are any sources of high-frequency electromagnetic wave (e.g. base stations and wireless networks) or low-frequency electromagnetic wave (e.g. high-voltage electric wires, electric towers and switchboards) which are close to the flat. |
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| After the technicians have confirmed whether the source of electromagnetic wave is of high-frequency or low-frequency, they will use the corresponding instruments to measure its intensity. |
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Base on the electromagnetic wave intensity measured, technicians will determine whether the indoor environment is safe. If the electromagnetic wave intensity exceeds the standards, technicians will provide advice for suitable improvement projects.
According to the advice of Building Biology in Germany, the effects of electromagnetic wave on indoor environments such as sleeping environments, living spaces and work environments are as follows:
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