manufacture Indoor Air Quality Monitor Detector Accurate Testing CO2 Formaldehyde (HCHO) TVOC PM2.5/PM1.0/PM10 Air Quality

1. if you are not Satisfied with the items after you get within 7 days ,you can send it back to us .Buyers pay the expree fee to return the goods ,Make sure the goods is in original condition .make sure no damaged or used when Returned .
2. 100% PAYMENT Or exchange the related items you require.
3. Buyer should offer the exact address before the order is delivered .and inform us in advance if he has the appointed one.Seller is not responsible for the damage or loss if the wrong address was given.
4. Kindly note: Make sure the returned goods well packed, if it was damaged during the transit ,then Buyer will need to afford the damage loss caused in the transit.
5. Cannot refunded if the goods is used