Hangzhou Hengsheng Electronic Technologies Co., Ltd. is a company which specializes in the research, development and manufacture of audio and video products, application software developing services and system integration services. Our company is located in the world-class scenery tourist city - Hangzhou. We also set up more than 20 offices in Chinese central cities. Hengsheng Technology can offer the whole solutions about the audio and video products for many industries in the world, ...