The registration address of the company is located at no. 17 of the zhongyang road, in the singdong city of shandong province. The registration authority is the market supervision authority of the zhong zheng zheng zhen, represented by a legal person, and covers fire protection doors, fire protection curtain doors, burglary doors, curtain doors, fire protection windows, indoor door development, wholesale, retail, installation services; wholesale and retail distribution of hardware products, electronics, computers, software and assistive equipment; software development, information system integration services, information technology advisory services. (projects subject to legal approval may not operate without the approval of the relevant department)