I bought my mi 9T from Lazada's Xiaomi Online store (
this listing). Before purchase, seller mention that it is local warranty and mention again after I told them I had some problem with my phone. Visited the service center in Funan today and was confirm that it is export set with no warranty. Online IMEI check reveal address as "**". I am in the process of escalating this with Lazada, please do not buy from this shop.
The staff at the service center told me that if address is Singapore, then it will have local warranty. He also mentioned that they have feedback to Lazada before to remove this shop as they are not authorized dealer. He took photo of my chat with the seller about local warranty perhaps to feedback to Xiaomi.