- Ultrasound Transducer: No answer, mar-17.,
- Smart Materials: Superb suppliers ;),
- SonoMecha: 275$/two transducers with off-the-shelf components. 50 units, we can offer $150.,
- PiezoSolutions: @contacted, @followup on 2/1/16. No answer from contact (march-17).,
- STI: no answer still on mar-17,
- OKOS: Contact Anastasiya Mlynchyk (External Sales & Executive Assistant), Won't do -> redirected to NDTX.,
- Blatek: Deja contactes en 2015 , Retour 2/1/16: be back with quotes, march-2017: button type transducer with a PCB lid,
- Hurricane: Contact Santo Meng, Summer '18,
- SonicConcepts: Contact in 2015 and 2016 , 1,000 unit quantities they can see this costing as low as $250 per unit. ,
- Valpey: No answer, mar-17.,
- NDTXducer: Quote OK. From 277$ to 320$.,
- PiezoTechnologies: Feedback 2/1/16: need the query sheet, 19/12/16: feedback required, march-17: follow up done, march-17: can't produce (see details below).,
- piezo.com: Listed in 2015, not contacted, @contacted, @followup on 2/1/16. No answer (march-17).,
- American Piezo (APC): Deja contactes en 2015, ~ $300 each for small Qty ( 2 or 3 of each Fq),
- TRS-Tech: No answer, mar-17.,
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