買了Blueair 3210+以後保固多久?要怎麼延長保固?

商本保固一年,到來思比科技官網註冊後可以再延長一年,總共二年保固。+
註冊網址: www.hdc-tw.com/warranty_blueair.html
機器本體有一張條碼貼紙,即為機器序號。

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