Any educator who has ever given an audiovisual presentation to a room full of students or shown slides to inquisitive parents at a local PTA meeting knows the key to a successful presentation lies in the set-up. If the technology works when it's supposed to, then the show likely will go off without a hitch. But, if the projector fails, or the wires aren't connected properly to the audio feed, for example ... well, that's when things turn ugly. To help avoid the embarrassment caused by technical failures, a Hong Kong-based company called Sun-Tech International Group has introduced the Sun-Tech...

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