Acoustic Zen Crescendo speaker crossover capacitors ... who makes them?


I own the MKl version of the Crescendo and see the crossover uses all Acoustic Zen branded capacitors. Most are blue in color with the smallest values bring black. Does anyone know what company makes these for AZ? I did email the builder, but no answer. Love any information the community may have on this topic. 

128x128grannyring
The speakers were sold some time ago and I don’t have any notes to go back to at this point. 
Hi Grannyring. I am about to buy your old speakers. The black Crescendos. Anything I should look out for or should shipping be an issue since they will be shipped to me in California? Nothing will come apart? Also if I may ask, why did you sell them after all that great work? 

Mike
Shipping is always a possible issue depending on how rough they are on them.   In terms of why I sold them, well that’s what I do! Build.... sell.  Modify .......  sell.  It’s part of the journey.