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Zhejiang Gangdu Electronic Co.,ltd.
Add：No.125 Jianxin Road, Quzhou,Zhejiang ,China  
Sales department：(direct line)+86-570-3853888   
                                (direct line)+86-13616707412  
                                 
Technical department：+86-13656707574   
MAIL：sales@autodoorsystem.com  
Business QQ：83827613
   
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