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Shandong Sanyi has gathered a big group of long-term cooperation customers, for the company, customer is treasure, but also friends, for the long-term development, it is bound to create integrity & good reputation, so that company can win customer's long-term trust and support. Company’s gradually perfection and maturity of the entire product management pattern, also suggest that it is growing step by step. Request ourselves continually, pursuit all details, attention to customer service, completely convey an enterprise's management idea. Customers facing technical problems during using Sanyi CPE, may contact us by our website "customer comments", or call us directly , our professional employee will give you a satisfactory answer as soon as possible.