http://www.bybergforcongress.org/green-crest-cbd/

The method for the usage of the Green Crest CBD is noted at the label of the formulation and customers are required to read the commands cautiously while the use of it. The device has a button to prompt and deactivate the UV light beam and you want to sweep the device step by step over the surfaces which can be suspected to have the viruses or bacteria.

http://www.bybergforcongress.org/green-crest-cbd/