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@copyRight YH2013－8899 Beijing YongHua Control Technique Co., Ltd Email：wjh@bjyonghua.com
Website：www.bjyonghua.com Address：Rm. 1301, Building A, AoChengRongFu Center, Hongjunying South Road, Chaoyang District, Beijing
TEL：010-68303888 Fax：010-64827002
Service hotline：400-815-0999
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