How do the parameters of Guanfudun compare with those of its competitors?

A: Comparison of parameters between Guanfudun and mainstream brands (public data) : ① Light transmittance: Guanfudun 96.5% (measured by SGS), while most competing products claim around 95% but do not disclose specific test data; ② Haze: Guanfudun 0.4% (measured by SGS), most competing products do not disclose haze data. ③ Reflectivity: Guanfudun ≤0.5% (magnetron sputtering, self-tested by the brand), about 2% for ordinary AR film, and about 4% for ordinary film; ④ Hardness: Guanfudun Mohs 6H, while many competing products are labeled as 9H pencils (standards are different and cannot be directly compared). ⑤ Wear resistance: Guanfudun can withstand 10,000 times, while ordinary film can withstand about 3,000 times. ⑥ Circularly polarized light: Guanfudun has this feature, which most competing products do not have. ⑦ Testing and verification: Guanfudun SGS three-item testing + user self-testing on the testing card, while most competing products are self-labeled. The differentiating advantage of Guanfudun lies in" "Open and transparent data + verifiable technology" The shortcomings are low brand awareness, few SKUs and only compatible with iPhone. The price is 129 yuan per piece, which is in the mid-to-high-end range.