The Products We Sell Are Produced From Foreign Factories And Shipped By Post. It Is An Imported Factory. The Quality And Function Of The Products Are Very High, With High Safety. It Is Equipped With 2 Filters To Allow You To Change Back And Forth. Can Effectively Filter Harmful Gases In The Air. Because We Are Produced And Shipped From Foreign Imported Factories, The Logistics Speed Will Not Be Very Fast, Please Consider And Choose To Buy. Thank You For Your Understanding And Support.