(3) if 311nm light is 9 watts, I don't think even more desirable. Because according to my observation, under rule out other factors only having enough heat is sufficient to promote skin pigmentation.I am thinking it's reason and learning the most of it. 365nm lamp is eighty watts. I'm improving its power for adults and old.
To sum up, now I will not replace 365 by 311.
(these point I'm most since Google)
Thank you very much.
Replies