Dual-Color TR Frames: How We Achieved Acetate-Like Layered Effects Through Injection Molding
There is a well-known limitation in the eyewear industry that most buyers accept as a fixed rule: TR frames come in single, solid colors. You pick a resin, you pick a dye batch, you inject, and you get one color per frame. If you want layered color effects or striking multi-color patchworks — the kind […]
Why Are “TR Frames” Priced So Differently? The Truth About Resin Grades, Domestic Scraps, and Premium Chains
When global buyers look at “TR frames” on a sourcing sheet, they see a single two-letter abbreviation. They expect the classic promise: light, flexible, nearly unbreakable. But in the manufacturing lines of Wenzhou, that two-letter word covers a massive spectrum of quality, chemical engineering, and—most importantly—hidden cost models. If you’ve ever wondered why one factory […]