@Ikat0 @JMFischer @DavidElfstrom @Poppendieck @BlueairUS It's hard. The commercial ones don't have high CADR. The mini-CR didn't either though.
Maybe find someone through your network who is enough of a hardware techie to build the PC-fan based ones for you.
@Ikat0 @JMFischer @DavidElfstrom @Poppendieck @BlueairUS 这很难。商业版的 CADR 不高。 mini-CR 也没有。
也许通过你的网络找到一个足够硬件技术人员为你构建基于 PC 风扇的人。