MMcall is one of the important brands under the Constant Electronics. It mainly covers the field of wireless calling Products, Wireless Calling Management Series, its related Solution, products, technology and service. Beijing MMCall Electronics., Ltd locates in the Zhongguancun Peking Science and Technology Park. It established in 2002, with the R&D and Manufacturing base in ShenYang and ShenZhen. It is the biggest Wireless Service Calling System and its support equipment manufacturer around the world. Creativeness, pragmatism, quality priority, customer Satisfaction â?? is our forever pursuit Corporate Values. Putting forward the Wireless Caller concept in the Wireless calling field inventively; Portable receiver Series Product, Calling supervise Management System; The Supermarket, Hospital, and factory industries Special Wireless Calling Management; Adopting the FM technology, voltage stabilizing circuit, Beat Frequency transmitting technology etc. We have a dozen of utility model and design patent. We are being the industry leader in the technology and product creativeness aspect. Putting forward the â??Star Serviceâ??, fully acting on ISO9001 International quality standard, establishing perfect quality control system, and implementing â??Six Sigmaâ??â??5Sâ?? and â??zero defectâ?? management. MMCall Series Products are â??CEâ??, â??FCCâ?? passed; Become integrated into the global market in the products performance and quality. We have built the marketing and Service Networks in the Large and middle scale cities within china. The customer industries engaged in the Catering service, Entertainment industry, Supermarket, Hospital, Rest home, Bank, Factory, Hotel, Office, House, School, Construction firms etc. At the same time our products export to the dozens of countries such as Japan, Australia, Europe, and USA etc. We persist in the credibility, win-win values all the time.