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文章: 21 來自: Shau Kei Wan
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于 2002-11-12 12:23 
Hi SS, I have the same problem with you, but you "had" you problem 3 years ago, and I have my problem now. I just toke away my UGF and added 1 canister filter (i.e. total 2 filters) and the NO2 is very high. Would you mind to share your experience with me? I have a few questions. If yes, can I email you my phone no. and we talk directly? (save time) Or you prefer I post my questions here (hope you have time to answers). Thanks.
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