Milestone Add-On Partners?

Is this Milestone Add-on proprietary technology? Or is it their partner's?

Milestone has specially designed and developed all XProtect add-on products

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**** **** *** *** Milestone ********* ***-***/****-***.

* ******* ********* *** OEM **** * *******'* product. ***** ***.

**** ******** ******* ** of ******** **** ********* offers **********. **** *** add-ons **** ****** ***** (e.g., ******** ***). ****** are *****-** ** ******* platforms (***** **** **** XProtect *********) ** ** additional ****, *** **** are ****** ************ **** no ****** **** (******** Screen ********).

**** *** **** **** these ********* *** ******* built ** ******* ******** of ******* ********?
** ** ** ********** because ** ** * basic ******** ** *** so ****?