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[ Trader ]Main business are Communication product
[ Manufacturer ]Main business are Network technology
[ Trader ]Main business are Safety protection product, Electric retractable door.
[ Manufacturer Trader ]Main business are Weak current electricity system
[ Manufacturer Trader ]Main business are Software, Exchanger.
[ Trader ]Main business are Network product, Weak current system integration.
[ Trader ]Main business are Copper cable, Optical fiber security distributing system, Integrated wiring system, Integrated service digital network transmission terminal equipment.
[ Manufacturer ]Main business are Alarm monitoring system, Enterprise office communication system.