1. According to Query 39 Health Network, the negative charge therapeutic instrument is a device that uses negative charges generated by negative ions to improve human health. Negative ions are negatively charged oxygen molecules, which can be generated by negative ion generators in the air. Negative ions can adsorb harmful substances in the air, including dust, bacteria, viruses, etc., and can also improve indoor air quality, relieve stress and improve sleep.

2. Negative therapeutic instrument is mainly used for human rehabilitation and health care, which can promote metabolism, enhance blood vessel elasticity and promote blood circulation.