Daheng related:
Optical mechanical and electrical products: http://www.cdhoptics.com
Laser treatment instrument: http://www.cdhcorp.com.cn dental products
Laser marking products: http://www.cdhcorp.com.cn
Headquarters:
Telephone: 010-82782668010-82783797
Fax: 010-82782669010-62960597
Address: #A9 Shangdi Xinxilu,Haidian District,Beijing 100085