Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood.
Link: Banggood product page
Price: -3 USD
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BG54a1bb, bgchinafest, BG236837, aff7off, BG6f428c, BGccf23a, BGa37111, Email5, BG12553e, bgshOOp10, BGAFF10OFF, 7d18f7, BG25f1cc, 13f142
(probably won’t work, but you can try them out)
Price history and price alert
Do you need price history chart (for all/most countries) for Huawei M6 Turbo Edition LTE CN 6/128GB Tablet? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).