QUOTE(hihihehe @ Jun 6 2020, 11:38 PM)
so what do you recommend me especially for a new car?
glossy and water beading are the reason i asking
Depends on your budget. And how often you're willing to work on your car.
Ceramic coatings as someone mentioned are very susceptible to water spotting. No single ceramic coating in the market right now has what it takes to totally prevent water spots. It's just the intrinsic nature of glass, just like how you get soap scum and calcium deposits on your toilet glass or mirror. So you really need to stay on top of things. Coated surfaces actually require more care to look tip-top.
If you're the weekly wash kind of person, then yes you can consider a ceramic coating. If you pemalas and don't care, then maybe not. So you're better off with a wax or sealant instead. I've encountered a lot of trashed coatings which are far beyond rescue because the owners thought they don't have to do any sort of work apart from sending it in for the "yearly maintenance".
If you're still keen on a ceramic coating, then any reputable brand would do like Carpro, Gyeon, Tacsystems, Gteqniq, IGL, Modesta to name a few. There a lot of "Facebook marketing" products out there claiming their products to contain ceramics, but I usually take them with a raised brow. Because it actually takes effort and R& D to formulate a good ceramic coating.
I think Gyeon CanCoat may be suitable for you since it's easy to use. Or the Turtle Wax Ceramic Spray Coating, IGL Premier, or Carpro Reload if you decide to go for ceramic-based sealants instead.