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SIGMA TIN ALLOY CO., LTD.
Building 3, Guanghui Industrial Zone B, Dongcheng Science and Technology Park, Bayi Road, Dongcheng District, Dongguan City
TEL：0769-27382189
FAX：0769-27384958
Contact：Mr. Du13686663819
E-mail：sm@sigmasolder.com
http://www.sigmasolder.com
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