Our factory supply the lock/home alarm system with the good price and good quality! Let me introduce to you as below: With over 20 years of experience in line of wire/wireless alarm system, surveillance system and video doorphone system, Shenzhen Security Group Co., Ltd. Has already become the biggest manufacturer of safe and security products in China. As the biggest manufacturing base of safe and security products, our plant covers 84300 square meters and workers are up to 6300. Due to the strict management, advanced devices, effective production flute and professional staff, Shenzhen Security Group Co., Ltd has obtained the authentication of CCC and CE. 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. Since we count on long-standing business relationships Shenzhen Security Group Co., Ltd. Deserves good reputation on quality and service in the long term. We believe in that the success of an enterprise results from the products of high quality and the trust from customers. Our aim is to create a harmonious and safe environment for people all over the world. All the products with the good quality and good price,and i will supply the good service to you! If you have any questions,send a mail to: xxxxx please! Have a nice day! Jacky