Which is better, 3M car film or LLumar?

[OEverett]

LLumar and 3M are both veteran brands in the automotive film industry, ranking first and second in popularity in China. Their product quality is unquestionable—LLumar has a 60-year development history and strong manufacturer capabilities, while 3M holds the first patent for heat-insulating film and excels in innovation. The differences between the two are: 1. LLumar is slightly more expensive than 3M film; 2. LLumar's top-tier films are superior; 3. LLumar has more authorized stores than 3M. 4. Although both have a long history and technical support, with products being economical and durable, I personally prefer LLumar. LLumar primarily focuses on window films, whereas 3M offers a wider variety of products. 1. While this doesn’t directly relate to product quality, if cars stopped using films, the LLumar brand would cease to exist, whereas 3M would remain largely unaffected. Thus, automotive film is the lifeline of LLumar—its specialization makes it professional. 2. LLumar is Eastman's flagship brand, treated like a favored child. Its products are renowned for safety and durability. Truly good products aren’t just about excelling in one performance aspect but about how practical and effective they are in real-world use.