Waterproof Phone2008-5-27
The phone in the MTR, highways, power plants, gas stations, gas stations, mines, docks, steel companies, large-scale projects such as the moisture-proof dust, fire,...
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Pa Phones2008-5-27
The phone in the MTR, highways, power plants, gas stations, gas stations, mines, docks, steel companies, large-scale projects such as the moisture-proof dust, fire,...
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Emergency Phone2008-5-27
The tunnel emergency calls to be with the majority of analog or digital program - controlled telephone switches compatible. Embedded installation, waterproof, fire...
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Automatic Telephone Dialing2008-5-27
Dial-up-call system : one that features : Abstract ◆ with automatic dial function ◆ dial-up number, as required, arbitrary or modify ◆ with regular telephones all ◆...
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