This is a high gain acoustic projection screen.The hole diameter is only 0.4 mm. If you want to enjoy a good stereo effect and sound effect, you can put the sound behind the screen, then this is your ideal choice. Made of PVC, 1.8-2.4 Gain can be compensated for the lack of brightness due to the sound hole or large size prjection.
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Address: NO.178, Lanling Road, Lanhe Town, Nansha District, Guangzhou City, Guangdong Province, P.R. China