This product is being sold by a Korean keyboard company(Abko).
A new switch has been applied to that keyboard.
The name of the switch is known as the optical switch.
It has a very similar appearance as a Kailh box switch.
Reason why switch structure is similar is same company ( Kailh )
The stabilizer noise was pretty intense,
And the biggest drawback is very poor switch alignment.
The reason is that the tolerance of stem is a little big.
Two drawbacks are very serious.
But It’s very quiet when you lubricate it.
After the lubrication process, the feeling and sound become very attractive.
Sooner or later I will introduce another keyboard.