Shenzhen Zuomuo Technology Co., Ltd. is a highly innovative,dynamic, professional R & D and production of the stylus, pointer, etc. of the high-tech enterprises, products widely used in multimedia display and interactive applications. With independent research and development production at present, there are mainly six series of science and technology: electromagnetic interactive electronic whiteboard pen, infrared interactive whiteboard pen, optical interactive electronic whiteboard pen (with reflective film or without), large size touch screen electronic whiteboard pen, capacitance interactive electronic whiteboard pen and the capacitance pen, and various types of electronic whiteboard supporting pointer pen, these products can be flexible use in classroom teaching, business training, conference presentations, medical treatment, military command.