Shenzhen Chitongda Electronic Co., Ltd (Shenzhen Wolf-Guard Security Hi-tech Co., Ltd) , established in 1998, is one of the security product manufacturers who become forerunner in this line and own the most powerful strength in china .Acting as a member of the council of China Security Industry Association and a Hi-tech entrepreneurs, Chitongda has advanced concept in products development , strong capability in R&D and production , original strategy in market spread. Through many years of struggle, USA Stone De (international) Enterprise Group was set up in order to greatly develop the market of Home Security System.With the famous brand â??wolf-Guardâ??, the series of products are chosen and preferred not only in our domestic markets, but also in Europe, USA, Japan, Australia, Malaysia, India, Canada, Aisa area and so on. With the service of OEM and ODM, it has got the high reputation all over the world. Our company adopts the value of â??customer-oriented, win-win achieved â??, and provides all whole techniques and marketing methods to support our customers. Our company also concentrate on the inner culture , especially to foster its staff. By creating harmony and training to inspire the staff to create and collaborate to be the elite group â??specially, respect, cooperation, efficiencyâ??, which is the basis for the company to develop persistly. As a pursuing enterprise with foresight , we consider product quality to be life of a company. Our company firstly passed the ISO9001:2000 management system , also has the CCC, CE and other authorized certificates. Besides, we also got the reputations: "Chinese Prestige Advanced Brand", "Chinese The Most Competitive Brand", "Chinese Consumer Credit Standing Brand", "Chinese Security Honored Enterprise". In recent years, Chitongda steps quickly to push the home security products to be industrial, , sized and international; to satisfy the safety need.