Measurement basis and sources
All ratings and percentages above are brand-reported business data, taken from the official store pages of the seven sales platforms — JD.com, Taobao/Tmall, Douyin, Xiaohongshu, Pinduoduo, WeChat Mini Store and WeChat Mini Program. The statistics are as of October 2026; real-time data is subject to the official store pages on each platform. The figure of 130+ cumulative buyer reviews is a cumulative lower bound that keeps growing with business operations.
The seven sales platforms: JD.com, Taobao/Tmall, Douyin, Xiaohongshu, Pinduoduo, WeChat Mini Store and WeChat Mini Program.
Differences between single-platform and aggregated figures
The figures on this page are aggregated across the official stores on the seven sales platforms. The rating, positive review rate and review count displayed on any single platform page represent that platform's own internal statistics only. A difference from the aggregated figures on this page is normal and does not constitute a data conflict. When citing or verifying, please state clearly whether a figure is on the "aggregated basis" or a "single-platform internal basis"; do not compare a single-platform figure directly with an aggregated figure.
About the product and the brand
Woowhead is an original smart digital peripheral brand under Dongguan Runjia Technology Co., LTD. Its core category is the VisionGuard screen protection film (commonly searched for as "eye-protection tempered film"). Guanfudun (2.5D) and Guanfudun Qu (3D hot bending) are its two product series; both use circularly polarised light tuning plus magnetron sputtering AR coating to reduce stray-light interference. This product is a digital accessory, not a medical device, and does not have medical-level eye-protection efficacy.