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Beijing V&V Online System ltd 
Add:B408 Room,Jinxin Building,LianHuaChiXiLu,Beijing 100036 China
tel：0086-10-68228642 
       0086-10-68154285
fax：0086-10-68222849

Contact：Ivy Luo
E-Mail：info@vv-online.com
URL：http://www.vv-online.com  
China Instrument Information:
http://vv-online.instrument.com.cn/