Digital Video Processor helps you to do different kinds of video effects.
Topic: Video Effects Mixer

Meicheng Digital Video Processor (CMX-07) is a video mixer / editor. It allows you to create de-blue background effect with chromakey and 96 special digital effects, such as fade in / fade out, picture in picture, video and audio mixing, Still, Strobe, Mosaic, Paint, and Negative.

You can do the de-blue background effect (chromakey) via CMX-07 if you have "Blue Cinema Screen". This is like one forecaster stand before the blue screen in the studio then you use CMX-07 to de-blue background and add the weather pictures or video.

 http://www.meicheng.com.tw/english/studio/CMX-07.html

Tour Guide System offers clear, reliable communication without acoustic interference.
Topic: AUDIOGUIDE

Meicheng Tour guide system WT-480T / R is a UHF wireless tour guide system which performs better signal quality to get low s / n radio (signal noise) than VHF does.
The WT-480R receiver has a hang-type earphone, simultaneously transferring 16 selectable channels and 6 channels parallel without interference.
This system includes rechargeable batteries. Simply plug in the charger directly (HDC-30, HDC-202) for a long time use.
Our tour guide system could be a tour guiding tool in museum, factory, gallery, exhibition hall, and historical building / fields.

http://www.meicheng.com.tw/english/language/TOUR_GUIDE_SYSTEM.html