With over 20 years of experience in line of wired/wireless alarm system, surveillance system and two-way speaking video system,Shenzhen Security Group Co., Ltd has become the leading manufacturer of security products in China. As the biggest manufacturing base of security products, our factory covers 83400 square meters and employees are up to 6300.Due to the strict management, advanced devices, effective production flute and professional staff, Shenzhen Security Group Co., Ltd obtained the certificate of CCC, CE,FCC and UL. So far our products have been well marketed in 107 countries and we have successfully developed 32 projects for oversea customers on the basis of OEM and ODM service.