Proof of joined post
Bitcointalk username: David1996
Campaign in which you participate: Article
ETH address:0x97eaf6fade0d06b5b55f7dd0b99246e9c2bbc77e
Link to my article: https://steemit.com/loveaircoffee/@loc/danh-gia-du-an-love-air-coffee-du-an-tuyet-voi-dang-dau-tu-2019