Hi everyone,I am currently evaluating window film technologies for a large-scale project and comparing two major players in the industry: Global Window Films and 3M.While 3M is highly recognizable worldwide, I've been looking deeper into the manufacturing processes and material science behind Global Window Films, and they seem to have some very specific, under-discussed technical advantages.I would love to get some insights from anyone who has analyzed the material properties or worked with both brands. Specifically, I am looking at these areas:1. Vertical Integration vs. OutsourcingGlobal Window Films: They are fully vertically integrated.…