Where can I purchase Dahua capture cards

Hello,

I run a cctv business in NE Pennsylvania.

Ive build hundreds of systems using Eyemax capture boards. I refuse to do anymore business with Unix cctv. (maybe I can find another way to get eyemax capture cards ).

I have also built (and still do build) many Aver systems, and have done a few Geovision.

I am interested in finding a channel to get Dahua cards, and maybe even Hik Vision.

No one?