Hikvision Digital Technology Co., Limited is a manufacturer and supplier of electronics such as cameras and video surveillance products and solutions. The company, established back in the year 2001, has grown tremendously in terms of its customer base and the different products it produces. According to reliable sources, Hikvision has over 8,000 employees not to mention that the staff dealing with research and development totals over 2,000.
Some of the products offered by HikVision include NVRs, hybrid DVRs, digital video servers, Standalone DVRs, compression cards, speed domes and high-definition IP cameras. Hikvision is headquartered in Hangzhou, China, but has expanded its operations to serve worldwide thus has regional branch offices in areas such as Los Angeles to cover the Americas, Amsterdam to cover Europe, Dubai on the other hand covering the middle east and a couple of joint ventures to cover India and Russia.

Ranked at 87 on the 2012 list of Fortune Global 500, Sony Corporation, commonly referred to as Sony, is one of the most successful electronics suppliers in the market. The company deals with electronics, game, entertainment and financial services sectors. Sony is a Japanese multinational conglomerate corporation based out of Tokyo, Japan.
Sony has been in the electronic industry for some time now. It was founded by Masaru Ibuka and Akio Morita in 1946 with a capital of $530 and a mere eight employees. The company has since grown to employ tens of thousands of employees from all over the world.

Zhejiang Dahua Technology Co., Limited is a supplier of video surveillance solutions in every part of the world. Although the company is not as old as some companies such as Sony, the products they produce are top-notch. The company deals with the production of Network PTZ Camera, Network Cameras, HDCVI Camera, Analog Camera, Analog PTZ Camera, NVR, HDCVI, DVR, Analog DVR, HD-SDI Products, Video Door Phone Encoder & Decoder Products, and Traffic Surveillance and so on.
Dahua is headquartered in China. In 2001, the same year it was founded, it became the first company from the country to launch 8-channel real-time embedded digital video recorder. It has customers both locally and globally.