New Bliesma beryllium 3 inch dome midrange

Bliesma is developing a new 3 inch dome midrange.
The beryllium dome will be the first to be released but an aluminium, paper and fabric dome are coming later. Flange would be 121mm wide and 10mm thick according to Stanislav Malikov (Bliesma founder/engineer).
Pre-production samples and their measurements to be expected in the beginning of June.