**Product Specifications:**
Brand: YIDUN
Model: 2024NEW, GM Series Sunglasses
Description: The GM series sunglasses feature a simple and versatile design that complements any style. Recommended for round face shapes, while square face shapes should avoid square decorations. Suitable for both round and square face shapes.
Certification: Certificate No. 4801140, Certificate No. 4728124
Patents:
- Utility Model Patent: Optical Blue Light and Radiation Blocking Glasses, Patent No. ZL.201520556719.3
- Utility Model Patent: UV Coating Film Sunglasses, Patent No. ZL201520556646.8
Inventor: Meirongsheng
Patent Application Date: July 29, 2015
Patent Owner: Nanchang YIDUN Technology Co., Ltd.
Patent Announcement Date: December 9, 2015
Patent Authorization Date: January 20, 2016
Patent Validity: 10 years from the application date
Annual Fee: Due on July 29th each year, failure to pay may result in termination of patent rights
Director: Meirongsheng
Features: Optical Blue Light and Radiation Blocking Glasses, UV Coating Film Sunglasses
Please note that the information provided is based on the specifications of the YIDUN GM Series Sunglasses model 2024NEW.
