Hangqiang Industrial None, Qiaohe Ind. Zone, Qijiang Dist., Chongqing, China (Mainland)

Grade Source (CQ) Electronics Limited was established in 2013 and has become a renowned organization over the years. We are a leading manufacturer, trading company in China offering high quality elect...

ShenZhen De Xuan Technology Development Co., LTD., focusing on the r&d and producing various types of electronic password lock and household fingerprint lock products, the main products includ...