Tel. 0755-21019223 (Central switchboard)
Press 1, Technical Dept.Press 2, Domestic Business Dept.Press 3, International Business Dept.
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Dayi Co. Address：1st Floor, Shengjianli Industrial Park, No. 2 Dafu Industrial Zone, Kukeng, Aubei Community, Guanlan Street, Longhua District, Shenzhen, China
Disenyiluode Co. Address: 8th Floor, Deshengchang Buliding, Huanguan South, Guanhu, Longhua District, Shenzhen, China
