1. This production has been awarded two patent of practicality and updated technology, they are 200820044298.6, 200820046943.8
2. High density multi core bronze thread, effectively reduce the loss, single side incoming thread desiging, avoids rolling.
3. Φ40mm phonation element for wide tessitura and bass beat. Using original packed materials imported from Japan.
2. High density multi core bronze thread, effectively reduce the loss, single side incoming thread desiging, avoids rolling.
3. Φ40mm phonation element for wide tessitura and bass beat. Using original packed materials imported from Japan.
