Why is X.One® Extreme Series not available for some curved screen models such as Galaxy Note 9,S9 Plus and so on.

As for consumer’s demand for curved screen phones, consumer mostly wants a fullscreen coverage screen protector for their device. Due to the nature of X.One® Extreme Series, it does not fit with curved screens mainly because of thickness which is only able to cover flat surfaces. The thinness and softness of Ultra Series that makes it more suitable for curved screens, providing full coverage. What’s being removed is its capability in absorbing and dispersing impact(the thick layer of the protector).