I use Osram’s UVC lamp if you can’t buy this one. I have a link of a pretty good lamp using Philips bulbs for you to refer to.
FIVE Smart UV Sterilizer Lamp From Xiaomi Ecosystem
Sale: the second one is already half price
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Buy one please use this link my friend. If you live in Europe you can use this discount code. It’s only $ 45
Coupons code: BGTT10 or bGhOnEy10
I think you should choose leds osram or philips because it has no or very little ozone