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Telephone:+86 535-2138077  
Yantai Longyi Machinery Co. Ltd
phone:+86 535-2138077  fax:+86 535-2138007
email:longyi@yantailm.com  sales@yantailm.com  service@yantailm.com
Technical support:TRUELAND(Yantai Chengyun Network Technology Co., Ltd.) 
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