Competition Electronic S & T Co., Ltd. is a professional manufacturer of building intelligent anti-burglar intercom system, whose products are researched, developed, produced and promoted by our company.All our products capability index are in accordance to the Standard of GA/T72 - 94 " building intercom electric control door burglar alarm current technical specifications" and Q/JH01 - 2003 " Enterprise Standard". All the products deals with "Public Security alarm system product Quality Acceptance inspection test centre" carry through the type inspection is: certified products.