MMcall is one of the important brands under Constant Electronics. It mainly covers field wireless calling Products, Wireless Calling Management Series, its related Solution, products, technology and service. Beijing MMCall Electronics., Ltd locates in Zhongguancun Peking Science ...
Telephone:86-10-51661323
Address:F7, C Bldg, International Chuangye Technology Garden, Shangdixinxi Rd 2#, HaiDian District , Beijing, China