Anyway. . . I found some information on the Internet for your reference.
Yue Mingjing's PMC ultra-bright lens is made of PMC ultra-bright material, which is highly purified on the basis of the original KR resin. The lens is more transparent and has higher wearing value. Equipped with Shi Tian A6 film, it has good anti-fouling and anti-fingerprint characteristics.
Let me show you two photos,
These two photos were taken on the official website of Yue Mingjingtou. For your reference,
Yes, it's a patented product with the patent number ZL20131KLOC-0/09537.7 (this was also found in official website of Yue Mingjing Film).
That's it. I hope it's adopted. Thank you~