| "In Future Sound" museum PLAY K-POP 4D Theater (Zhejiang) |
| 18 May 2015 |
Mach D Series DF-12, DF-15 and T series M-218T to build a surround sound system.
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|
| "In Future Sound" museum PLAY K-POP 4D Theater (Zhejiang) |
| 18 May 2015 |
Mach D Series DF-12, DF-15 and T series M-218T to build a surround sound system.
|
|