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Topic: Regulation of backcheck (wire) of upright piano for quality double repiticion  (Read 2326 times)

Offline themaximillyan

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Regulation of backcheck (wire) of upright piano for quality double repiticion
on: December 22, 2018, 01:50:36 PM

Vladimir Sukhopyatkin make it's process so it. He creating that state of backcheck  bending it's. That a  backcheck without stoping to starts work so it's no stopering for  quality jack double repiticion
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