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[ Manufacturer Trader ]Main business are Exchange, Photoemissive machine, Light receiver, Coding and decoding system for CATV, Optical amplifier.
[ Manufacturer Trader ]Main business are Electronic communicate product.
[ Manufacturer ]Main business are Digital user programme-controlled switchboard
[ Trader ]Main business are Group telephone, Program exchanger, Telephone exchanger.
[ Trader ]Main business are Telephone switchboard
[ Manufacturer ]Main business are Communication electrical appliance
[ Manufacturer Trader ]Main business are Communication equipment
[ Manufacturer Trader ]Main business are Programme-control digital exchanger, Group telephone
[ Manufacturer Trader ]Main business are Group phone, Exchanger system, Network system and so on
[ Manufacturer ]Main business are Electronic and telecommunication equipment.