You probably do not aware that many of the brands are subsidiary of one big company. The tint film used by:
1) LLumar
2) Vista
3) EnerLogic
4) V-KOOL
5) IQue
6) Hüper Optik
7) Sun-X
8) nanoLux
9) Gila
10) FormulaOne High Performance Auto Tint

are all made by Solutia which owned by Eastman Chemical Company

https://www.eastman.com/Pages/solutia.aspx

The 3M is produced by #M as it is a big company by itself. SolarGard is owned by Saint Gobain performance plastic company https://www.plastics.saint-gobain.com/. Sun-Gard is just another brand name for Madico, which is a big company that produce tint film mainly.

The name you said copy is actually original. Ecotint (M) Sdn. Bhd is the distributor for Madico film.

Now there are many brands in the market. Many want to established own name by buying China products. They maybe good and may not be as good. Just stick to known brand. If they have warranty, why not. The problem with unknown name is that we don't know if the brand will still exist within warranty period.

The SA get commission. The tint shop will approach SA so that they get business from new car owner. By putting in package, which most customer think is a good deal, the price is already included. It is good to ask what brand and which shop do the tinting. Tinting need training and experience. The tint should be done in dust free environment, not shop with open door.

Just Googled and found out it is under Commonwealth Laminating & Coating, Inc. which was also acquired by Eastman Chemical Company

When I clicked www.commonwealthlaminating.com, it is redirected to https://www.suntekfilms.com/Default.aspx

As you can see though many brands, it is monopolized by a big company

That one you need to ask cococonutseller

It is just different brands have different grade. Eastman bought the company which may ahve been producing the tint film already. So, basically Eastman is just investor

As long as it is peeling under warranty, you can get replacement. V-Kool in my previous car bubbled before warranty expired too and I get replacement. Even V-Kool gradually lose its ability to block heat over time. The worst is the cheap one. Probably after 1~2 years, it is basically useless, even though it looks cool