Title: Changchun Hongda Optoelectronic and Biostatics Ide Description: is a high-tech group merging information and biological technologies into an organic whole. We are one of most renowned private enterprises in China. Hongda Industrial Garden was founded in 2000 at the High-Tech Industrial Development ... Tags: Fingerprint door locks Category: Changchun URL: http://www.cchongda.com.cn