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| Main Parts are pistons, tuning tubes, the auxiliary tube coordinated part respectively adopt copper nickel alloy or the treatment of surface chrome-plating, which have stronger corrosion-resistance and abrasion-resistance. The pistons, after through precision process, are good in gas-tightness, comfortable and free in feel. |
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| XA-A Type Bb Tenor Horn: 01 |
XA-A Type Bb Rotary Tenor Horn: 02 |
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| XA-A Type Bb Rotary Baritone: 03 |
XA-A Type Bb Baritone: 04 |
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| XA-A Type Bb Tuba: 05 |
XA-B Type Bb Tuba: 06 |
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| XA-A Type Bb four key rotary tuba: 07 |
XA-A Type Bb four key baritone tuba: 08 |
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