PianoVisions is a certified installer of composite actions made by Wessell, Nickel & Gross.
Mason & Hamlin is a renowned brand of very well build pianos in the United States.
The company has started a division of actions build from high-strength, low weight action components. The main advantage is a very low playing weight, not compromising the repetitions speed. The dynamic range in sound of the piano increases a lot. Especially the possibility to play very soft (pppp ;-)) is flabbergasting.
Jan-Gert Vink has followed a training at the factory from Mason & Hamlin in Haverhill USA in 2014 to become a certified installer of these modern actions.
The Bosendorfer Phoenix has been retro-fitted with a composite action consisting of carbon fibre hammer shanks and WNG repetitions, balance pins, front pins and capstans.
To see a list of certified companies: http://consumer.wessellnickelandgross.com/find-a-rebuilder/#Netherlands
Feel free to send an inquiry about retro-fitting in WNG action in your piano.