**Product Specifications:**
Brand: YIDUN
Style: Trendy and fashionable sunglasses
Design: Cool and stylish sunglasses, new arrival
Features: Oversized frames for a slimming effect, popular among influencers and bloggers
Material: Upgraded TR material for lightweight and durable frames
Lens: High-definition lenses with UV protection, glare reduction, and clear vision
Frame: PC material with comfortable skin-friendly piano paint finish
Design Concept: Ergonomic design for face shape enhancement, seamless frameless mirror visual effect
Certification: Patented optical blue light and radiation protection glasses, patented UV-resistant color film coating glasses
Patents: Patent numbers ZL.201520556719.3 and ZL201520556646.8
Patent Holder: YIDUN Technology Co., Ltd.
Patent Application Date: July 29, 2015
Patent Approval Date: January 20, 2016
Patent Validity: 10 years from the application date
Maintenance: Annual fees must be paid to maintain patent rights
Note: The information provided is based on the Chinese Patent Law
Please note that the above information is a summary of the product specifications for YIDUN sunglasses.
