The CHICOM Military and various armed police organizations use a variety of optics including knock offs of EoTech, Aimpoint 30mm models, and a fairly prolific ACOG knock off. Their newest rifles seem to use a prism optic which resembles Leupolds ACOG knock off the HAMR.
None are 1:1 matches to any of Holosun's export products. As discussed in the prior Trijicon lawsuit thread, Holosun is a subsidiary of a company owned by the CHICOM Government but that is true of any Chinese company. So even if doesn't actually make the CHICOM military's optics their Intellectual Property will be shared with those who do. Our optic comrade.....
Like most optics companies Holosun has at least 3 different grade of optic, the 400 series, the 500 series and the "Military" models.
Holosun has gotten foreign military contracts for their "Military" line, most prominent example I can think of being beating Aimpoint to supply the red dot optics and magnifiers to Estonia for their LMT AR rifles. How much of that win involved stolen Aimpoint IP ? I don't know but given the way China operates in other venues I'd be shocked if it didn't involve stolen IP.