Zhongshan Shengyibao Acoustooptics Co., Ltd
Sales center: 10# Guangzhu Highway, Dongfeng Town, Zhongshan, Guangdong
Tel: +86-760-22603838（8line） 22611838
Fax: +86-760-22613638
Postcode: 528425
E-mail:syb@188.com
Website: www.syb.com.cn 
www.shengyibao.com