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[ Manufacturer ]Main business are Communication equipment
[ Manufacturer ]Main business are Digital programme-controlled switchboard
[ Manufacturer ]Main business are Large-sized programme-controlled switchboard
[ Manufacturer ]Main business are Digital programme-controlled switchboard.
[ Manufacturer ]Main business are Electrocommunication products
[ Trader ]Main business are Digital programme control switchboard, Digital group telephone
[ Manufacturer Trader ]Main business are Computer software and hardware.
[ Manufacturer ]Main business are Bridge type protection circuit, Resistance diode network circuit.
[ Manufacturer ]Main business are Communication product.
[ Manufacturer ]Main business are Programme-controlled switchboard, Power source.