Consultancy Services
The services provided by professionals in particular field. For example, a company may charge a certain sum of money for the certain tasks their consultant accomplished for the company who ordered the service.
It is a type of communication between two ordinary phones, which are connected and voice transmits over telecommunication network.
Beijing Sinoco Information Technology,Inc
Sinoco Information Technology Co.,ltd. is a high-tech enterprise committing itself to the manufacture of the VOIP terminal units
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