I believe CoolKit simply provides the ready-made solution for these brands to just put their brands on.
The famous white mark.
It must be the same thing that Tuya does with its products.
That’s when there aren’t many variations of coolit.
For this type of equipment I only located these two brands.
EARU is the only one that has this version that works with eWelink.
I don’t think a product that should have a good sales number is a reverse-engineered version and eWelink has never identified that.
Here’s what I thought about CoolKit:
I saw that the US also manufactures the same product and other variations of it for Tuya.