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 Grandsys provides a complete set of call center program. DTSC and its affiliate enterprises - Grandsys Technology & Service Corp and Sysage Digital Technology Co.,LTD(Shanghai). Grandsys has engaged in call center for 16 years, with professional practice and service experience. Now,
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 As the industry changes, the customer service center gradually enters into a new era of fine management. The challenge our customers facing gradually become diversifying.
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