Founded in 1992, we are a hi-tech enterprise integrating R&D, production, sale and service. We have attained ISO9001 International Quality Management System Certification and China Compulsory Certification (CCC). Our company carries out production, marketing and service in strict accordance with related standards. Our company is devoted to the R&D and production of telephone network alarm systems, GSM/PSTN dual net alarm systems, Chinese short message alarm systems, telephone line video ...   |