Hunan Hongda Technology Co., Ltd is devoted to researching electronic security and protection technology. It is a high-tech company which has created a new field of electronic locks technology. The company registered capital is 30 million, and now there are more than 400 employees. After three years� effort for research and development, a multi-way independent backup of electronic system with super stability has been invented. Even if it�s destroyed, other multi-way electronic back up can guarantee the normal utilization of the lock. Thus multiple protections have been formed. The patent number is 200610126268.5. No lock hole & multi-electron security technology initially and exclusively are applied in the global electronic lock field. Meanwhile, the company has been honored other 11 China state invention patent. It Marks Hunan Hongda technology Co., LTD has taken the leading position in the world of electronic lock technical fields.