Return is accepted ONLY due to DOA while arrival
There is no return if protection seals are removed/broken/opened
Import Tax and custom clearance are responded by buyer
I hope the item is able to comply with your test engineering and applications
We do warm up and quality control testing before shipment
Tks for a good feedback comment if you satisfied with the item and our service
Your questions are much welcomed
Option:
We are able to offer you a traceable certificated of calibration report for 350USD
More items are able to find from our ebay store
https://www.ebay.com/str/greatvasttechnology