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87 Inch Optical Whiteboard Parameter

◇◇Technical Parameters1、Board facing angle: ≥85 inches, display ratio 4:3;2、Touch sensing method: optical image sensing technology is a touch frame co

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85 Inch Optical Whiteboard Parameter

◇◇Technical Parameters1、Board facing angle: ≥85 inches, display ratio 4:3;2、Touch sensing method: optical image sensing technology is a touch frame co

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82 Inch Optical Whiteboard Parameter

◇◇Technical Parameters1、Board facing angle: ≥82 inches, display ratio 4:3;2、Touch sensing method: optical image sensing technology is a touch fra

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