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We promise: when you buy Shuangdun brand products you will be pleased and
satisfied and have no fear of trouble.
Marketing department Phone: 021-56628141, 021-56722263； Fax:021-56628382
Quality test category Phone: 021-56902362
E-mail: cui.sd@shuangdun.com
Add. Of company: 494 Tiantong An Rd,Shanghai, China, Postcode: 200071
Website: www.shuangdun.com
Thank you for your comments on our marketing and quality of products:
（Please tick in one of the circles for degree of satisfaction）