AliExpress: "Sorry, this item is no longer available!" (2020/02/26)
Has Shenzhen Xunlong stopped producing this item?
Is this a long term issue due to COVID-19?
Is this just a short-term (a few days) shortage?
I'd like to see the marketing people post in these forums or in the web site's news link when items are out of stock and the expected length of time they will be unavailable.