What are the products with OIT on the air purifier filter?

pu1. I heard that there's a problem when you use a 3M filter

2017-12-20

OK

pu2. https://ericashin.blog.me/220770926267
If you look here, there was a problem with LG products, so they replaced the filter for free

2017-12-21

OK

pu3. I heard Winia Kukulg Samsung Coway used 3m.
This is about last year, so I don't think it's right now

2017-12-21

OK

pu4. I was curious, so I looked it up, and most of them in the market got caught
I think he changed the filter to a different one after that
http://m.post.naver.com/viewer/postView.nhn?volume...
As a result of the Ministry of Environment's test, the home air purifier with OIT detected is 58 products from 7 brands (Cuckoo Electronics, Winia, LG Electronics, Samsung Electronics, Coway, Cheongho Nice, and Freeco), and 2 car air conditioners (Hyundai Mobis and Duwon). In addition, it was found that all but one product used a 3M filter.

2017-12-21

OK