Hoya Pro1 Digital MC PL-C polarizing filter turned out to be a fake without multilayer coating

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You can buy polarizer filter here alii.pub/5rvjtn
I wanted to shoot a comparative review of polarizing filters of two well-known brands - K&F Concept and Hoya. I chose polarizing filters with similar technical characteristics, which are available on the Internet at almost the same price - about $16.
In the last video, I showed the unpacking of a polarizing filter from K&F Concept - • Полярик K&F Concept HM...
In this video I show you the unboxing of the Hoya Polar.
However, in the process of unpacking, I realized that I received a Chinese counterfeit, not Hoya.
Based on this, a comparative review of polarizing filters will not be objective, since the K&F Concept filter is original, and Hoya is a fake. But nevertheless, I bought these two filters in China at almost the same price, therefore, it is worth showing their work and comparing the results. I hope someone will find this video useful and help them make the right choice when buying.