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Yunnan Yunao Optoelectronic Co., Ltd 
Address:Haikou, Kunming, Yunnan, China 
Website: www.ynoe.net    
Email: sales@ynoe.net  export@ynoe.net
Tel: Marketing Dept. +86-871-68590449/68590785/68590465  
Fax: +86-871-68591248
Service hotline: +86-871-68591386  
Office Tel/Fax: +86-871-68590896 
Tech & QC Dept.: +86-871-68590785/68590465 Ext 8024
Manufacture Dept.: +86-871-68590785 Ext 8004