Sawayaka Lamp is good for Corona and others because of Catalyst LED Lamp with Safety UV power. We have evidence for other source. And also confirmed Safety UV power by JET (Japan Environment office). Corona virus are very expensive for testing, our trials are using colon bacillus and confirmed 99% dead in 24 hours testing. Catalyst LED lamp becomes very popular in Japan under Corona age. Thanks for your interested in, please ask us in any time. Call on 81-3 -5281-8282, or Contact us info@intexs.com