RAYSOV INSTRUMENT CO.,LTD. 
ADD：No.31-12 East,Central Avenue,New Town,Dandong,Liaoning,China.
TEL： 86-415-6277666
FAX： 86-415-6277566
EML：info@raysov.com
WEB：www.stqljr.cn
Skype：emmeliu@126.com
WeChat：86-15668834640
RAYSOV PRECISION CO.,LTD. 
ADD：108 Luqi Road, Huishan District, Wuxi , Jiangsu, China
TEL： 86-510-82581996
FAX： 86-510-82852996
RAYSOV Beijing Office
ADD：Room 306, Building 3, East District, Chaolai Science and Technology Industrial Park, Chaoyang District, Beijing,China
TEL：86-10-84148587
FAX：86-10-84148587