| Shanghai Shangheng Electronics Co., Ltd.  Address: 3rd Floor, Building 5, Lane 415, Gulang Road, Shanghai Customer Service Hotline：021-52845231 021-52845223 Service Email：sunemc@163.com |
Consultation Hotline： 021-52845231 Address: 3rd Floor, Building 5, Lane 415, Gulang Road, Shanghai E-mail：sunemc@163.com
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